(MESS) cat.c (Canon Cat): Reverse engineered 99% of memory map including mirrors based on extensive hardware testing; Located Printer, Modem and Floppy drive registers (not yet hooked up); Added v1.74 firmware and SpellCheck ROMs. Added a lot of debugging information. [Lord Nightmare, Balrog]
This commit is contained in:
Jonathan Gevaryahu
parent
7404b4eadb
commit
53fceb54a4
@ -1,6 +1,6 @@
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/***************************************************************************
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Canon Cat driver by Miodrag Milanovic
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Canon Cat driver by Miodrag Milanovic and Lord Nightmare
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12/06/2009 Skeleton driver.
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15/06/2009 Working driver
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@ -21,16 +21,77 @@ Here are exact working instructions thanks to Sandy Bumgarner:
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- Then press USE FRONT and the SHIFT keys together and tap the space bar. Note that the cursor
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stops blinking. Now a Pressing the RETURN key gets the Forth OK and you are 'in' as they say.
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In MESS, to activate it as above:
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* when the Cat boots, type (without quotes) "Enable Forth Language"
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* hold left-alt(leap left) and type E n a, release left-alt (the left cursor is now at the first character)
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* simultaneously press both alt keys for a moment and release both (the whole "Enable Forth Language" line will be selected)
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* press either Ctri(use front) key and press backspace(Erase) (If beeping actually worked the cat would beep here)
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* press ctrl(use front), shift, and space (the cursor should stop blinking)
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* press enter and the forth "ok" prompt should appear. you can type 'page' and enter to clear the screen
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Canon Cat:
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<insert guru-diagram here once drawn>
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Crystals:
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X1: 19.968Mhz, used by GA2 (plus a PLL to multiply by 2?), and divide by 4 for cpuclk, divide by 8 for 2.5mhz and divide by 5.5 for 3.63mhz (is this suposed to be divide by 6? there may not be a pll if it is...)
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X2: 3.579545Mhz, used by the DTMF generator chip AMI S2579 at IC40
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X3: 2.4576Mhz, used by the modem chip AMI S35213 at IC37
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ToDo:
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- Floppy drive (3.5", 256kb)
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- Beeper/speaker
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- Swyft - figure out the keyboard
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* Canon Cat
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- Find the mirrors for the write-only video control register and figure out what the writes actually do
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- The 2.40 (bios 0) firmware gets annoyed and thinks it has a phone call at random
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(hit ctrl to make it shut up for a bit or go into forth mode);
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The 1.74 (bios 1) firmware doesn't have this issue.
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Figure out what causes it and make it stop.
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- Floppy drive (3.5", Single Sided Double Density MFM, ~400kb)
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* Cat has very low level control of data being read or written, much like the Amiga does
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* first sector is id ZERO which is unusual since most formats are base 1 for sectors
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* sectors are 512 bytes, standard MFM with usual address and data marks and ccitt crc16
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* track 0 contains sector zero repeated identically 10 times; the cat SEEMS to use this as a disk/document ID
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* tracks 1-79 contain sectors 0x0 thru 0x9 ('normal' mfm parlance: sectors -1, 0, 1, ... 7, 8)
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* this means the whole disk effectively contains 512*10*80 = 409600 bytes of data, though track 0 is just a disk "number" identifier for the cat meaning 404480 usable bytes
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* (Once this is done I'd declare the system working)
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- Beeper/speaker; this is connected to the DUART 'user output' pin OP3 and probably depends on an accurate implementation of the duart counters/timers
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- Centronics port
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- RS232C port
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- RS232C port and Modem "port" connected to the DUART's two ports
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- DTMF generator chip (connected to DUART ports OP4,5,6,7)
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- 6ms timer at 0x83xxxx
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- Watchdog timer/powerfail at 0x85xxxx
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- Canon Cat released versions known: 1.74 (dumped), 2.40 (dumped), 2.42 (NEED DUMP)
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* Swyft
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- Figure out the keyboard (unlike the cat interrupts are involved? or maybe an NMI on a timer/vblank?)
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- Communications ports (Duart? or some other plain UART?)
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- Floppy (probably similar to the Cat)
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- Centronics port (probably similar to the Cat)
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- Multple undumped firmware revisions exist
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****************************************************************************/
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// Defines
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#undef DEBUG_VIDEO_STATUS_W
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#undef DEBUG_VIDEO_CONTROL_W
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#undef DEBUG_FLOPPY_CONTROL_W
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#undef DEBUG_FLOPPY_CONTROL_R
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#undef DEBUG_FLOPPY_DATA_W
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#undef DEBUG_FLOPPY_DATA_R
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#undef DEBUG_FLOPPY_STATUS_R
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#undef DEBUG_PRINTER_DATA_W
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#undef DEBUG_PRINTER_CONTROL_W
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#undef DEBUG_MODEM_R
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#undef DEBUG_MODEM_W
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#undef DEBUG_DUART_OUTPUT_LINES
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#undef DEBUG_TEST_W
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// Includes
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#include "emu.h"
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#include "cpu/m68000/m68000.h"
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#include "machine/68681.h"
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@ -40,22 +101,29 @@ class cat_state : public driver_device
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{
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public:
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cat_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag) ,
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: driver_device(mconfig, type, tag),
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m_p_sram(*this, "p_sram"),
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m_p_videoram(*this, "p_videoram"){ }
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m_p_videoram(*this, "p_videoram")
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{ }
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DECLARE_WRITE16_MEMBER(cat_video_status_w);
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DECLARE_WRITE16_MEMBER(cat_test_mode_w);
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DECLARE_READ16_MEMBER(cat_modem_r);
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DECLARE_WRITE16_MEMBER(cat_modem_w);
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DECLARE_READ16_MEMBER(cat_battery_r);
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DECLARE_WRITE16_MEMBER(cat_printer_w);
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DECLARE_READ16_MEMBER(cat_floppy_r);
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DECLARE_WRITE16_MEMBER(cat_floppy_w);
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DECLARE_READ16_MEMBER(cat_s35213_r);
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DECLARE_WRITE16_MEMBER(cat_s35213_w);
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DECLARE_READ16_MEMBER(cat_floppy_control_r);
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DECLARE_WRITE16_MEMBER(cat_floppy_control_w);
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DECLARE_WRITE16_MEMBER(cat_printer_data_w);
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DECLARE_READ16_MEMBER(cat_floppy_data_r);
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DECLARE_WRITE16_MEMBER(cat_floppy_data_w);
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DECLARE_READ16_MEMBER(cat_keyboard_r);
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DECLARE_WRITE16_MEMBER(cat_keyboard_w);
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DECLARE_WRITE16_MEMBER(cat_video_w);
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DECLARE_READ16_MEMBER(cat_something_r);
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DECLARE_WRITE16_MEMBER(cat_video_control_w);
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DECLARE_READ16_MEMBER(cat_floppy_status_r);
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DECLARE_READ16_MEMBER(cat_battery_r);
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DECLARE_WRITE16_MEMBER(cat_printer_control_w);
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DECLARE_READ16_MEMBER(cat_2e80_r);
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DECLARE_READ16_MEMBER(cat_0080_r);
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DECLARE_READ16_MEMBER(cat_0000_r);
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optional_shared_ptr<UINT16> m_p_sram;
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required_shared_ptr<UINT16> m_p_videoram;
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UINT8 m_duart_inp;// = 0x0e;
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@ -66,6 +134,7 @@ public:
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DECLARE_MACHINE_START(cat);
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DECLARE_MACHINE_RESET(cat);
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DECLARE_VIDEO_START(cat);
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DECLARE_DRIVER_INIT(cat);
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DECLARE_MACHINE_START(swyft);
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DECLARE_MACHINE_RESET(swyft);
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DECLARE_VIDEO_START(swyft);
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@ -75,44 +144,170 @@ public:
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TIMER_CALLBACK_MEMBER(swyft_reset);
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};
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WRITE16_MEMBER( cat_state::cat_video_status_w )
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// TODO: this init doesn't actually work yet! please fix me!
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/*
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DRIVER_INIT_MEMBER( cat_state,cat )
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{
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m_video_enable = BIT( data, 3 );
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}
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UINT8 *svrom = machine().root_device().memregion("svrom")->base();
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int i;
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// fill svrom with the correct 2e80 pattern except where svrom1 sits
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// first half
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for (i = 0; i < 0x20000; i+=2)
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svrom[i] = 0x2E;
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// second half
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for (i = 0x20000; i < 0x40000; i+=2)
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{
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svrom[i] = 0x2E;
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svrom[i+1] = 0x80;
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}
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}*/
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WRITE16_MEMBER( cat_state::cat_test_mode_w )
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{
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#ifdef DEBUG_TEST_W
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fprintf(stderr, "Test mode reg write: offset %06X, data %04X\n", 0x860000+(offset<<1), data);
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#endif
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}
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READ16_MEMBER( cat_state::cat_modem_r )
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// AMI S35213 300/1200 Single Chip Modem (datasheet found at http://bitsavers.trailing-edge.com/pdf/ami/_dataBooks/1985_AMI_MOS_Products_Catalog.pdf on pdf page 243)
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READ16_MEMBER( cat_state::cat_s35213_r )
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{
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return 0;
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#ifdef DEBUG_MODEM_R
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fprintf(stderr,"Read from s35213 modem address %06X\n", 0x820000+(offset<<1));
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#endif
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// HACK: return default 'sane' modem state
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return 0x00;
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}
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WRITE16_MEMBER( cat_state::cat_modem_w )
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WRITE16_MEMBER( cat_state::cat_s35213_w )
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{
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#ifdef DEBUG_MODEM_W
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fprintf(stderr,"Write to s35213 modem address %06X, data %04X\n", 0x820000+(offset<<1), data);
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#endif
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}
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READ16_MEMBER( cat_state::cat_battery_r )
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/* 0x600000-0x65ffff Write: Video Generator (AKA NH4-5001 AKA Gate Array #1 @ IC30)
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writing to the video generator is done by putting the register number in the high 3 bits
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and the data to write in the lower 12 (14?) bits.
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The actual data-bus data written here is completely ignored,
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in fact it isn't even connected to the gate array; The firmware writes 0x0000.
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hence:
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0 = must be 0
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s = register select
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d = data to write
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? = unknown
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x = ignored
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? 1 1 ? ? s s s s ? ? ? ? ? ? d d d d d d d d .
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600xxx - VSE (End of Frame)
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608xxx - VST (End of VSync)
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610xxx - VSS (VSync Start)
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618xxx - VDE (Active Lines) = value written * 4
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620xxx - unknown
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628xxx - unknown
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630xxx - unknown
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638xxx - unknown
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640xxx - HSE (End H Line)
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648xxx - HST (End HSync)
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650xxx - HSS (HSync Start)
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658xxx - VOC (Video Control)
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*/
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WRITE16_MEMBER( cat_state::cat_video_control_w )
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{
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/* just return that battery is full */
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return 0x7fff;
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/*
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* 006500AE , ( HSS HSync Start 89 )
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* 006480C2 , ( HST End HSync 96 )
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* 006400CE , ( HSE End H Line 104 )
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* 006180B0 , ( VDE Active Lines 344 )
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* 006100D4 , ( VSS VSync Start 362 )
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* 006080F4 , ( VST End of VSync 378 )
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* 00600120 , ( VSE End of Frame 400 )
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* 006581C0 , ( VOC Video Control Normal Syncs )
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*/
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#ifdef DEBUG_VIDEO_CONTROL_W
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static const char *const regDest[16] = { "VSE (End of frame)", "VST (End of VSync)", "VSS (Start of VSync)", "VDE (Active Lines)", "unknown 620xxx", "unknown 628xxx", "unknown 630xxx", "unknown 638xxx", "HSE (end of horizontal line)", "HST (end of HSync)", "HSS (HSync Start)", "VOC (Video Control)", "unknown 660xxx", "unknown 668xxx", "unknown 670xxx", "unknown 678xxx" };
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fprintf(stderr,"Write to video chip address %06X; %02X -> register %s with data %04X\n", 0x600000+(offset<<1), offset&0xFF, regDest[(offset&0x3C000)>>14], data);
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#endif
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}
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WRITE16_MEMBER( cat_state::cat_printer_w )
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// Floppy control register (called fd.cont in the cat source code)
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/* FEDCBA98 (76543210 is ignored)
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* |||||||\-- ?always low? (may be some sort of 'reset' or debug bit? the cat code explicitly clears this bit but never sets it)
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* ||||||\--- WRITE GATE: 0 = write head disabled, 1 = write head enabled (verified from cat source code)
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* |||||\---- ?always high? (leftover debug bit? unused by cat code)
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* ||||\----- /DIRECTION: 1 = in, 0 = out (verified from forth cmd)
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* |||\------ /SIDESEL: 1 = side1, 0 = side0 (verified from forth cmd)
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* ||\------- STEP: 1 = STEP active, 0 = STEP inactive (verified from cat source code)
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* |\-------- MOTOR ON: 1 = on, 0 = off (verified)
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* \--------- /DRIVESELECT: 1 = drive 0, 0 = drive 1 (verified from forth cmd)
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*/
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// 0x800000-0x800001 read
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READ16_MEMBER( cat_state::cat_floppy_control_r )
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{
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m_pr_cont = data;
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#ifdef DEBUG_FLOPPY_CONTROL_R
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fprintf(stderr,"Read from Floppy Status address %06X\n", 0x800000+(offset<<1));
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#endif
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return 0x0480;
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}
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READ16_MEMBER( cat_state::cat_floppy_r )
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// 0x800000-0x800001 write
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WRITE16_MEMBER( cat_state::cat_floppy_control_w )
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{
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return 0;
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#ifdef DEBUG_FLOPPY_CONTROL_W
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fprintf(stderr,"Write to Floppy Control address %06X, data %04X\n", 0x800000+(offset<<1), data);
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#endif
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}
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WRITE16_MEMBER( cat_state::cat_floppy_w )
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// 0x800002-0x800003 read = 0x0080, see open bus
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// 0x800002-0x800003 write
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WRITE16_MEMBER( cat_state::cat_keyboard_w )
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{
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m_keyboard_line = data >> 8;
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}
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// 0x800004-0x800005 write = printer data
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WRITE16_MEMBER( cat_state::cat_printer_data_w )
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{
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#ifdef DEBUG_PRINTER_DATA_W
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fprintf(stderr,"Write to Printer Data address %06X, data %04X\n", 0x800004+(offset<<1), data);
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#endif
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}
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// 0x800006-0x800007: Floppy data register (called fd.dwr in the cat source code)
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READ16_MEMBER( cat_state::cat_floppy_data_r )
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{
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#ifdef DEBUG_FLOPPY_DATA_R
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fprintf(stderr,"Read from Floppy Data address %06X\n", 0x800006+(offset<<1));
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#endif
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return 0x0080;
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}
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WRITE16_MEMBER( cat_state::cat_floppy_data_w )
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{
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#ifdef DEBUG_FLOPPY_DATA_W
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fprintf(stderr,"Write to Floppy Data address %06X, data %04X\n", 0x800006+(offset<<1), data);
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#endif
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}
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// 0x800008-0x800009: Floppy status register (called fd.status in the cat source code)
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/* FEDCBA98 (76543210 is ignored)
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* |||||||\-- ? always low
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* ||||||\--- ? always low
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* |||||\---- READY: 1 = ready, 0 = not ready (verified from cat source code)
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* ||||\----- /WRITE PROTECT: 1 = writable, 0 = protected (verified)
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* |||\------ /TRACK0: 0 = on track 0, 1 = not on track 0 (verified)
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* ||\------- /INDEX: 0 = index sensor active, 1 = index sensor inactive (verified)
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* |\-------- ? low on drive 1, high on drive 0?
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* \--------- ? usually high but occasionally low?
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stuff that needs to be found here:
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ready sense
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*/
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READ16_MEMBER( cat_state::cat_floppy_status_r )
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{
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#ifdef DEBUG_FLOPPY_STATUS_R
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fprintf(stderr,"Read from Floppy Status address %06X\n", 0x800008+(offset<<1));
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#endif
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return 0x0080;
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}
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// 0x80000a-0x80000b
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READ16_MEMBER( cat_state::cat_keyboard_r )
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{
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UINT16 retVal = 0;
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@ -139,46 +334,144 @@ READ16_MEMBER( cat_state::cat_keyboard_r )
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return retVal;
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}
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WRITE16_MEMBER( cat_state::cat_keyboard_w )
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// 0x80000c-0x80000d (unused in cat source code; may have originally been a separate read only port where 800006 would have been write-only)
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// 0x80000e-0x80000f read
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READ16_MEMBER( cat_state::cat_battery_r )
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{
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m_keyboard_line = data >> 8;
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/* just return that battery is full, i.e. bit 15 is 0 */
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/* to make the cat think the battery is bad, return 0x8080 instead of 0x0080 */
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// TODO: hook this to a dipswitch
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return 0x0080;
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}
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// 0x80000e-0x80000f write
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WRITE16_MEMBER( cat_state::cat_printer_control_w )
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{
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/*
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* FEDCBA98 (76543210 is ignored)
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* |||||||\-- CC line enable (verified from cat source code)
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* ||||||\--- LEDE line enable (verified from cat source code)
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* |||||\---- ?
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* ||||\----- ? always seems to be written as high?
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* |||\------ ?
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* ||\------- ?
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* |\-------- ?
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* \--------- ?
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*/
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// writes of 0x0A00 turn on the keyboard LED on the LOCK key
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// writes of 0x0800 turn off the keyboard LED on the LOCK key
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#ifdef DEBUG_PRINTER_CONTROL_W
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fprintf(stderr,"Write to Printer Control address %06X, data %04X\n", (offset<<1)+0x80000e, data);
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#endif
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m_pr_cont = data;
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}
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WRITE16_MEMBER( cat_state::cat_video_w )
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WRITE16_MEMBER( cat_state::cat_video_status_w )
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{
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/*
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006500AE , ( HSS HSync Strart 89 )
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006480C2 , ( HST End HSync 96 )
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006400CE , ( HSE End H Line 104 )
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006180B0 , ( VDE Active Lines 344 )
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006100D4 , ( VSS VSync Start 362 )
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006080F4 , ( VST End of VSync 378 )
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00600120 , ( VSE End of Frame 400 )
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006581C0 , ( VOC Video Control Normal Syncs )
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*/
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/*
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* 76543210
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* |||||||\-- ?
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* ||||||\--- ?
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* |||||\---- Video enable (1 = video on, 0 = video off/screen black)
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* ||||\----- ? (always written as 1?)
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* |||\------ ? (always written as 1?)
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* ||\------- ?
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* |\-------- ?
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* \--------- ?
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*/
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#ifdef DEBUG_VIDEO_STATUS_W
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fprintf(stderr, "Video status reg write: offset %06X, data %04X\n", 0x840000+(offset<<1), data);
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#endif
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m_video_enable = BIT( data, 2 );
|
||||
}
|
||||
|
||||
READ16_MEMBER( cat_state::cat_something_r )
|
||||
// open bus etc handlers
|
||||
READ16_MEMBER( cat_state::cat_2e80_r )
|
||||
{
|
||||
return 0x00ff;
|
||||
return 0x2e80;
|
||||
}
|
||||
|
||||
READ16_MEMBER( cat_state::cat_0000_r )
|
||||
{
|
||||
return 0x0000;
|
||||
}
|
||||
|
||||
READ16_MEMBER( cat_state::cat_0080_r )
|
||||
{
|
||||
return 0x0080;
|
||||
}
|
||||
|
||||
|
||||
/* Canon cat memory map, based on a 16MB dump of the entire address space of a running unit using forth "1000000 0 do i c@ semit loop"
|
||||
68k address map:
|
||||
a23 a22 a21 a20 a19 a18 a17 a16 a15 a14 a13 a12 a11 a10 a9 a8 a7 a6 a5 a4 a3 a2 a1 (a0 via UDS/LDS)
|
||||
0 0 * x x * * * x x x x x x x x x x x x x x x x *GATE ARRAY 2 DECODES THESE LINES TO ENABLE THIS AREA*
|
||||
0 0 0 0 x 0 a * * * * * * * * * * * * * * * * b R ROM (ab: 00=ic4 01=ic2 10=ic5 11=ic3) (EPROM 27C512 x 4) [controlled via GA2 /ROMCS]
|
||||
0 0 0 0 x 1 0 0 x x * * * * * * * * * * * * * 0 RW SVRAM ic11 d4364 (battery backed) [controlled via GA2 /RAMCS]
|
||||
0 0 0 0 x 1 x 1 x x x x x x x x x x x x x x x 0 O OPEN BUS (reads as 0x2e) [may be controlled via GA2 /RAMCS?]
|
||||
0 0 0 0 x 1 1 0 x x x x x x x x x x x x x x x 0 O OPEN BUS (reads as 0x2e) [may be controlled via GA2 /RAMCS?]
|
||||
0 0 0 0 x 1 x x x x x x x x x x x x x x x x x 1 O OPEN BUS (reads as 0x80) [may be controlled via GA2 /RAMCS?]
|
||||
0 0 0 1 x x x x x x x x x x x x x x x x x x x x O BUS CONFLICT (reads as random garbage, corrupted copy based on when a20 is 0, some sort of bus collision? note GA2 can't see a20 so /ROMCS and /RAMCS lines are probably active here as above)
|
||||
0 0 1 x x 0 * * * * * * * * * * * * * * * * * 0 R SVROM 2 ic7 (not present on cat as sold, open bus reads as 0x2e) [controlled via GA2 /SVCS0]
|
||||
0 0 1 x x 0 * * * * * * * * * * * * * * * * * 1 R SVROM 0 ic6 (MASK ROM tc531000) [controlled via GA2 /SVCS0]
|
||||
0 0 1 x x 1 * * * * * * * * * * * * * * * * * 0 O OPEN BUS (reads as 0x2e) [controlled via GA2 /SVCS1] *SEE BELOW*
|
||||
0 0 1 x x 1 * * * * * * * * * * * * * * * * * 1 R SVROM 1 ic8 (not present on cat as sold, open bus reads as 0x80) [controlled via GA2 /SVCS1] *SEE BELOW*
|
||||
*NOTE: on developer units, two 128K SRAMS are mapped in place of the two entries immediately above!* (this involves some creative wiring+sockets or an official IAI 'shadow ram board')
|
||||
0 1 * * * * * * * * * * * * * * * * * * * * * * *BOTH GATE ARRAYS 1 and 2 DECODE THIS AREA; 2 DEALS WITH ADDR AND 1 WITH DATA/CAS/RAS*
|
||||
0 1 0 x x a b * * * * * * * * * * * * * * * * * RW VIDEO/SYSTEM DRAM (ab: 00=row 0, ic26-29; 01=row 1, ic22-25; 10=row 2; ic18-21; 11=row 3; ic14-17)
|
||||
*NOTE: DRAM rows 2 and 3 above are only usually populated in cat developer units!*
|
||||
0 1 1 ? ? * * * ? ? ? ? ? ? ? * * * * * * * * x W VIDEO CONTRL REGISTERS (reads as 0x2e80)
|
||||
1 x x x x x x x x x x x x x x x x x x * * * * * *GATE ARRAY 3 DECODES THIS AREA, GA3 IS ENABLED BY /IOCS1 FROM GA2*
|
||||
1 0 0 Y Y 0 0 0 x x x x x x x x x x x * * * * 0 *IO AREA* Note byte reads in this area behave erratically if both Y bits are set while word reads work fine always
|
||||
x x x x 1 O OPEN BUS (reads as 0x80)
|
||||
0 0 0 0 0 RW Floppy control lines (drive select, motor on, direction, step, side select, ?write gate?)
|
||||
0 0 0 1 0 W Keyboard Row Select (reads as 0x00)
|
||||
0 0 1 0 0 W Centronics Printer Data W (reads as 0x00)
|
||||
0 0 1 1 0 RW Floppy data register
|
||||
0 1 0 0 0 R Floppy status lines (write protect, ready, index, track0)
|
||||
0 1 0 1 0 R Keyboard Column Read
|
||||
0 1 1 0 0 W? Unknown (reads as 0x00)
|
||||
0 1 1 1 0 RW Read: Battery status (MSB bit, 0 = ok, 1 = dead, other bits read as 0)/Write: Centronics Printer and Keyboard LED/Country Code Related
|
||||
1 x x x 0 W? Unknown (reads as 0x00)
|
||||
1 0 0 x x 0 0 1 x x x x x x x x x x x * * * * 1 RW 68681 DUART at ic34 [controlled via GA2 /DUARTCS]
|
||||
1 0 0 x x 0 1 0 x x x x x x x x x x * * * * * 0 RW Modem Chip AMI S35213 @ IC37 DATA BIT 7 ONLY [controlled via GA2 /SMCS]
|
||||
1 0 0 x x 0 1 1 x x x x x x x x x x x x x x x * RW Read: Fixed 16-bit counter. increments once per frame? Write: Modem Chip?
|
||||
1 0 0 x x 1 0 0 x x x x x x x x x x x x x x x * W? Video Control register? (screen enable on bit 3?) (reads as 0x2e80)
|
||||
1 0 0 x x 1 0 1 x x x x x x x x x x x x x x x * R? reads as 0x0100 0x0101 or 0x0102, some sort of test register or video status register?
|
||||
1 0 0 x x 1 1 0 x x x x x x x x x x x x x x x * W? Test register? (reads as 0x0000)
|
||||
1 0 0 x x 1 1 1 x x x x x x x x x x x x x x x * ? Unknown (reads as 0x2e80)
|
||||
|
||||
1 0 1 x x x x x x x x x x x x x x x x x x x x x O OPEN BUS (reads as 0x2e80)
|
||||
1 1 x x x x x x x x x x x x x x x x x x x x x x O OPEN BUS (reads as 0x2e80)
|
||||
*/
|
||||
|
||||
|
||||
static ADDRESS_MAP_START(cat_mem, AS_PROGRAM, 16, cat_state)
|
||||
ADDRESS_MAP_UNMAP_HIGH
|
||||
AM_RANGE(0x00000000, 0x0003ffff) AM_ROM // 256 KB ROM
|
||||
AM_RANGE(0x00040000, 0x00043fff) AM_RAM AM_SHARE("p_sram") // SRAM powered by battery
|
||||
AM_RANGE(0x00200000, 0x0027ffff) AM_ROM AM_REGION("svrom",0x0000) // SV ROM
|
||||
AM_RANGE(0x00400000, 0x0047ffff) AM_RAM AM_SHARE("p_videoram") // 512 KB RAM
|
||||
AM_RANGE(0x00600000, 0x0065ffff) AM_WRITE(cat_video_w) // Video chip
|
||||
AM_RANGE(0x00800000, 0x00800001) AM_READWRITE(cat_floppy_r, cat_floppy_w)
|
||||
AM_RANGE(0x00800002, 0x00800003) AM_WRITE(cat_keyboard_w)
|
||||
AM_RANGE(0x00800008, 0x00800009) AM_READ(cat_something_r)
|
||||
AM_RANGE(0x0080000a, 0x0080000b) AM_READ(cat_keyboard_r)
|
||||
AM_RANGE(0x0080000e, 0x0080000f) AM_READWRITE(cat_battery_r,cat_printer_w)
|
||||
AM_RANGE(0x00810000, 0x0081001f) AM_DEVREADWRITE8_LEGACY("duart68681", duart68681_r, duart68681_w, 0xff )
|
||||
AM_RANGE(0x00820000, 0x008200ff) AM_READWRITE(cat_modem_r, cat_modem_w)// modem
|
||||
AM_RANGE(0x00840000, 0x00840001) AM_WRITE(cat_video_status_w) // Video status
|
||||
AM_RANGE(0x00860000, 0x00860001) AM_WRITE(cat_test_mode_w) // Test mode
|
||||
AM_RANGE(0x000000, 0x03ffff) AM_ROM AM_MIRROR(0x080000) // 256 KB ROM
|
||||
AM_RANGE(0x040000, 0x043fff) AM_RAM AM_SHARE("p_sram") AM_MIRROR(0x08C000)// SRAM powered by battery
|
||||
AM_RANGE(0x200000, 0x27ffff) AM_ROM AM_REGION("svrom",0x0000) AM_MIRROR(0x180000) // SV ROM
|
||||
AM_RANGE(0x400000, 0x47ffff) AM_RAM AM_SHARE("p_videoram") AM_MIRROR(0x180000) // 512 KB RAM
|
||||
AM_RANGE(0x600000, 0x67ffff) AM_READWRITE(cat_2e80_r,cat_video_control_w) AM_MIRROR(0x180000) // Gate Array #1: Video
|
||||
AM_RANGE(0x800000, 0x800001) AM_READWRITE(cat_floppy_control_r, cat_floppy_control_w) AM_MIRROR(0x18FFE0) // floppy control lines and readback
|
||||
AM_RANGE(0x800002, 0x800003) AM_READWRITE(cat_0080_r, cat_keyboard_w) AM_MIRROR(0x18FFE0) // keyboard col write
|
||||
AM_RANGE(0x800004, 0x800005) AM_READWRITE(cat_0080_r, cat_printer_data_w) AM_MIRROR(0x18FFE0) // Centronics Printer Data
|
||||
AM_RANGE(0x800006, 0x800007) AM_READWRITE(cat_floppy_data_r,cat_floppy_data_w) AM_MIRROR(0x18FFE0) // floppy data read/write
|
||||
AM_RANGE(0x800008, 0x800009) AM_READ(cat_floppy_status_r) AM_MIRROR(0x18FFE0) // floppy status lines
|
||||
AM_RANGE(0x80000a, 0x80000b) AM_READ(cat_keyboard_r) AM_MIRROR(0x18FFE0) // keyboard row read
|
||||
AM_RANGE(0x80000c, 0x80000d) AM_READ(cat_0080_r) AM_MIRROR(0x18FFE0) // Open bus?
|
||||
AM_RANGE(0x80000e, 0x80000f) AM_READWRITE(cat_battery_r,cat_printer_control_w) AM_MIRROR(0x18FFE0) // Centronics Printer Control, keyboard led and country code enable
|
||||
AM_RANGE(0x800010, 0x80001f) AM_READ(cat_0080_r) AM_MIRROR(0x18FFE0) // Open bus?
|
||||
AM_RANGE(0x810000, 0x81001f) AM_DEVREADWRITE8_LEGACY("duart68681", duart68681_r, duart68681_w, 0xff ) AM_MIRROR(0x18FFE0)
|
||||
AM_RANGE(0x820000, 0x82003f) AM_READWRITE(cat_s35213_r,cat_s35213_w) AM_MIRROR(0x18FFC0) // AMI S35213 Modem Chip, all access is on bit 7
|
||||
//AM_RANGE(0x830000, 0x830001) AM_READ(cat_6ms_counter) AM_MIRROR(0x18FFFE) // 6ms counter?
|
||||
AM_RANGE(0x840000, 0x840001) AM_READWRITE(cat_2e80_r,cat_video_status_w) AM_MIRROR(0x18FFFE) // Video status/Output port register
|
||||
//AM_RANGE(0x850000, 0x850001) AM_READ(cat_video_status) AM_MIRROR(0x18FFFE) // video status read: hblank, vblank or draw?
|
||||
AM_RANGE(0x860000, 0x860001) AM_READWRITE(cat_0000_r, cat_test_mode_w) AM_MIRROR(0x18FFFE) // Test mode
|
||||
AM_RANGE(0x870000, 0x870001) AM_READ(cat_2e80_r) AM_MIRROR(0x18FFFE) // Open bus?
|
||||
AM_RANGE(0xA00000, 0xA00001) AM_READ(cat_2e80_r) AM_MIRROR(0x1FFFFE) // Open bus?
|
||||
AM_RANGE(0xC00000, 0xC00001) AM_READ(cat_2e80_r) AM_MIRROR(0x3FFFFE) // Open bus?
|
||||
ADDRESS_MAP_END
|
||||
|
||||
static ADDRESS_MAP_START(swyft_mem, AS_PROGRAM, 16, cat_state)
|
||||
@ -226,7 +519,7 @@ static INPUT_PORTS_START( cat )
|
||||
|
||||
PORT_START("LINE1")
|
||||
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_B) PORT_CHAR('n') PORT_CHAR('B')
|
||||
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',')
|
||||
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COMMA) PORT_CHAR(',') PORT_CHAR('<')
|
||||
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_L) PORT_CHAR('l') PORT_CHAR('L')
|
||||
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_H) PORT_CHAR('h') PORT_CHAR('H')
|
||||
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_U) PORT_CHAR('u') PORT_CHAR('U')
|
||||
@ -236,7 +529,7 @@ static INPUT_PORTS_START( cat )
|
||||
|
||||
PORT_START("LINE2")
|
||||
PORT_BIT(0x01, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_V) PORT_CHAR('v') PORT_CHAR('V')
|
||||
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.')
|
||||
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_STOP) PORT_CHAR('.') PORT_CHAR('>')
|
||||
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_COLON) PORT_CHAR(';') PORT_CHAR(':')
|
||||
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_G) PORT_CHAR('g') PORT_CHAR('G')
|
||||
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_I) PORT_CHAR('i') PORT_CHAR('I')
|
||||
@ -269,7 +562,7 @@ static INPUT_PORTS_START( cat )
|
||||
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_SPACE) PORT_CHAR(' ')
|
||||
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Return") PORT_CODE(KEYCODE_ENTER) PORT_CHAR(13)
|
||||
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_S) PORT_CHAR('s') PORT_CHAR('S')
|
||||
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\xbd') PORT_CHAR('\xbc')
|
||||
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_OPENBRACE) PORT_CHAR('\xbd') PORT_CHAR('\xbc') //PORT_CHAR('}') PORT_CHAR('{')
|
||||
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_Q) PORT_CHAR('q') PORT_CHAR('Q')
|
||||
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_MINUS) PORT_CHAR('-') PORT_CHAR('_')
|
||||
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_1) PORT_CHAR('1') PORT_CHAR('!')
|
||||
@ -289,10 +582,10 @@ static INPUT_PORTS_START( cat )
|
||||
PORT_BIT(0x02, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Right Leap") PORT_CODE(KEYCODE_RALT)
|
||||
PORT_BIT(0x04, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Page") PORT_CODE(KEYCODE_PGUP) PORT_CODE(KEYCODE_PGDN)
|
||||
PORT_BIT(0x08, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Shift Lock") PORT_CODE(KEYCODE_CAPSLOCK)
|
||||
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Backspace") PORT_CODE(KEYCODE_BACKSPACE)
|
||||
PORT_BIT(0x10, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("Erase") PORT_CODE(KEYCODE_BACKSPACE)
|
||||
PORT_BIT(0x20, IP_ACTIVE_LOW, IPT_UNUSED)
|
||||
PORT_BIT(0x40, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_NAME("UNDO") PORT_CODE(KEYCODE_BACKSLASH)
|
||||
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('\xb1') PORT_CHAR('\xb0')
|
||||
PORT_BIT(0x80, IP_ACTIVE_LOW, IPT_KEYBOARD) PORT_CODE(KEYCODE_TILDE) PORT_CHAR('\xb1') PORT_CHAR('\xb0') // PORT_CHAR('\\') PORT_CHAR('~')
|
||||
INPUT_PORTS_END
|
||||
|
||||
static INPUT_PORTS_START( swyft )
|
||||
@ -418,18 +711,26 @@ static UINT8 duart_input(device_t *device)
|
||||
}
|
||||
}
|
||||
|
||||
// TODO: hook to speaker and dtmf generator
|
||||
static void duart_output(device_t *device, UINT8 data)
|
||||
{
|
||||
#ifdef DEBUG_DUART_OUTPUT_LINES
|
||||
fprintf(stderr,"Duart output io lines changed to: %02X\n", data);
|
||||
#endif
|
||||
}
|
||||
|
||||
static const duart68681_config cat_duart68681_config =
|
||||
{
|
||||
duart_irq_handler,
|
||||
duart_tx,
|
||||
duart_input,
|
||||
NULL
|
||||
duart_output
|
||||
};
|
||||
|
||||
static MACHINE_CONFIG_START( cat, cat_state )
|
||||
|
||||
/* basic machine hardware */
|
||||
MCFG_CPU_ADD("maincpu",M68000, XTAL_5MHz)
|
||||
MCFG_CPU_ADD("maincpu",M68000, XTAL_19_968MHz/4)
|
||||
MCFG_CPU_PROGRAM_MAP(cat_mem)
|
||||
|
||||
MCFG_MACHINE_START_OVERRIDE(cat_state,cat)
|
||||
@ -448,7 +749,7 @@ static MACHINE_CONFIG_START( cat, cat_state )
|
||||
|
||||
MCFG_VIDEO_START_OVERRIDE(cat_state,cat)
|
||||
|
||||
MCFG_DUART68681_ADD( "duart68681", XTAL_5MHz, cat_duart68681_config )
|
||||
MCFG_DUART68681_ADD( "duart68681", XTAL_19_968MHz*2/11, cat_duart68681_config ) // duart is normally clocked by 3.6864mhz xtal, but cat uses a divider from the main xtal instead which yields 3.63054545Mhz. There is a trace to cut and a mounting area to allow using an actual 3.6864mhz xtal if you so desire
|
||||
|
||||
MCFG_NVRAM_ADD_0FILL("nvram")
|
||||
MACHINE_CONFIG_END
|
||||
@ -486,16 +787,33 @@ ROM_END
|
||||
ROM_START( cat )
|
||||
ROM_REGION( 0x40000, "maincpu", ROMREGION_ERASEFF )
|
||||
// SYS ROM
|
||||
ROM_LOAD16_BYTE( "r240l0.bin", 0x00001, 0x10000, CRC(1b89bdc4) SHA1(39c639587dc30f9d6636b46d0465f06272838432) )
|
||||
ROM_LOAD16_BYTE( "r240h0.bin", 0x00000, 0x10000, CRC(94f89b8c) SHA1(6c336bc30636a02c625d31f3057ec86bf4d155fc) )
|
||||
ROM_LOAD16_BYTE( "r240l1.bin", 0x20001, 0x10000, CRC(1a73be4f) SHA1(e2de2cb485f78963368fb8ceba8fb66ca56dba34) )
|
||||
ROM_LOAD16_BYTE( "r240h1.bin", 0x20000, 0x10000, CRC(898dd9f6) SHA1(93e791dd4ed7e4afa47a04df6fdde359e41c2075) )
|
||||
ROM_SYSTEM_BIOS( 0, "r240", "Canon Cat V2.40 Firmware")
|
||||
ROMX_LOAD( "r240l0.ic2", 0x00001, 0x10000, CRC(1b89bdc4) SHA1(39c639587dc30f9d6636b46d0465f06272838432), ROM_SKIP(1) | ROM_BIOS(1))
|
||||
ROMX_LOAD( "r240h0.ic4", 0x00000, 0x10000, CRC(94f89b8c) SHA1(6c336bc30636a02c625d31f3057ec86bf4d155fc), ROM_SKIP(1) | ROM_BIOS(1))
|
||||
ROMX_LOAD( "r240l1.ic3", 0x20001, 0x10000, CRC(1a73be4f) SHA1(e2de2cb485f78963368fb8ceba8fb66ca56dba34), ROM_SKIP(1) | ROM_BIOS(1))
|
||||
ROMX_LOAD( "r240h1.ic5", 0x20000, 0x10000, CRC(898dd9f6) SHA1(93e791dd4ed7e4afa47a04df6fdde359e41c2075), ROM_SKIP(1) | ROM_BIOS(1))
|
||||
ROM_SYSTEM_BIOS( 1, "r174", "Canon Cat V1.74 Firmware")
|
||||
// Canon cat v1.74 roms are labeled as r74; they only added the major number to the rom label after 2.0
|
||||
ROMX_LOAD( "r74__0l__c18c.blue.ic2", 0x00001, 0x10000, CRC(b19aa0c8) SHA1(85b3e549cfb91bd3dd32335e02eaaf9350e80900), ROM_SKIP(1) | ROM_BIOS(2))
|
||||
ROMX_LOAD( "r74__0h__75a6.yellow.ic4", 0x00000, 0x10000, CRC(75281f77) SHA1(ed8b5e37713892ee83413d23c839d09e2fd2c1a9), ROM_SKIP(1) | ROM_BIOS(2))
|
||||
ROMX_LOAD( "r74__1l__c8a3.green.ic3", 0x20001, 0x10000, CRC(93275558) SHA1(f690077a87076fd51ae385ac5a455804cbc43c8f), ROM_SKIP(1) | ROM_BIOS(2))
|
||||
ROMX_LOAD( "r74__1h__3c37.white.ic5", 0x20000, 0x10000, CRC(5d7c3962) SHA1(8335993583fdd30b894c01c1a7a6aca61cd81bb4), ROM_SKIP(1) | ROM_BIOS(2))
|
||||
|
||||
ROM_REGION( 0x80000, "svrom", ROMREGION_ERASEFF )
|
||||
ROM_REGION( 0x80000, "svrom", ROMREGION_ERASE00 )
|
||||
// SPELLING VERIFICATION ROM (SVROM)
|
||||
// since ROM_FILL16BE(0x0, 0x80000, 0x2e80) doesn't exist, the even bytes and latter chunk of the svrom space are filled in in DRIVER_INIT
|
||||
// Romspace here is a little strange: there are 3 rom sockets on the board:
|
||||
// svrom-0 maps to 200000-21ffff every ODD byte (d8-d0)
|
||||
ROMX_LOAD( "uv1__nh7-0684__hn62301apc11__7h1.ic6", 0x00000, 0x20000, CRC(229CA210) SHA1(564B57647A34ACDD82159993A3990A412233DA14), ROM_SKIP(1)) // this is a 28pin tc531000 mask rom, 128KB long
|
||||
// svrom-1 maps to 200000-21ffff every EVEN byte (d15-d7)
|
||||
// no rom is in the socket; it reads as open bus 0x2E
|
||||
// svrom-2 maps to 240000-25ffff every ODD byte (d8-d0)
|
||||
// no rom is in the socket; it reads as open bus 0x80
|
||||
// there is no svrom-3; 240000-25ffff EVEN always reads as 0x2E
|
||||
ROM_END
|
||||
|
||||
/* Driver */
|
||||
|
||||
/* YEAR NAME PARENT COMPAT MACHINE INPUT INIT COMPANY FULLNAME FLAGS */
|
||||
COMP( 1985, swyft,0, 0, swyft, swyft, driver_device, 0, "Information Applicance Inc", "Swyft", GAME_NOT_WORKING | GAME_NO_SOUND)
|
||||
COMP( 1987, cat, swyft, 0, cat, cat, driver_device, 0, "Canon", "Cat", GAME_NOT_WORKING | GAME_NO_SOUND)
|
||||
/* YEAR NAME PARENT COMPAT MACHINE INPUT DEVICE INIT COMPANY FULLNAME FLAGS */
|
||||
COMP( 1985, swyft,0, 0, swyft, swyft, driver_device, 0, "Information Applicance Inc", "Swyft", GAME_NOT_WORKING | GAME_NO_SOUND)
|
||||
COMP( 1987, cat, swyft, 0, cat, cat, driver_device, 0, "Canon", "Cat", GAME_NOT_WORKING | GAME_NO_SOUND)
|
||||
|
||||
Loading…
Reference in New Issue
Block a user