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Merge pull request #933 from Bavarese/patch-5

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Do away with KEYBOARD_WORKAROUND
This commit is contained in:
R. Belmont 2016-06-06 13:39:54 -04:00
commit 6e35713b48
1 changed files with 27 additions and 100 deletions
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125
src/mame/drivers/rainbow.cpp
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@ -4,31 +4,38 @@
DEC Rainbow 100 DEC Rainbow 100
Driver-in-progress by R. Belmont and Miodrag Milanovic. Driver-in-progress by R. Belmont and Miodrag Milanovic.
Portions (2013 - 2015) by Karl-Ludwig Deisenhofer (Floppy, ClikClok RTC, NVRAM, DIPs, hard disk). Keyboard fix by Cracyc (June 2016)
Portions (2013 - 2016) by Karl-Ludwig Deisenhofer (Floppy, ClikClok RTC, NVRAM, DIPs, hard disk).
STATE AS OF APRIL 2015 To unlock floppy drives A-D compile with WORKAROUND_RAINBOW_B (prevents a side effect of ERROR 13).
Only single sided disk images with 80 tracks, 10 sectors appear to work (IMG or *.TD0 / TeleDisk).
If problems arise, delete the NVRAM file in folder Rainbow.
You may also want to reassign SETUP (away from F3, where it sits on a LK201).
STATE AS OF JUNE 2016
---------------------- ----------------------
Driver is based entirely on the DEC-100 'B' variant (DEC-190 and DEC-100 A models are treated as clones). Driver is based entirely on the DEC-100 'B' variant (DEC-190 and DEC-100 A models are treated as clones).
While this is OK for the compatible -190, it doesn't do justice to ancient '100 A' hardware. While this is OK for the compatible -190, it doesn't do justice to ancient '100 A' hardware.
RBCONVERT.ZIP has details on how model 'A' differs from version B. RBCONVERT.ZIP documents how model 'A' differs from version B.
Issues with this driver: BUGS / ISSUES
(1) Keyboard emulation incomplete (fatal; inhibits the system from booting with ERROR 50). (1) LOOPBACK circuit not emulated, NMI from RAM card also unemulated (ERROR 27).
The former is used in startup tests, the latter seems less relevant (must use menu self test "S").
Serial ports do not work, so serial communication failure (ERROR 60) and ERROR 40 (serial (2) serial ports do not work, so serial communication failure (ERROR 60) and ERROR 40 (serial
printer interface) result. Unfortunately the BIOS tests all three serial interfaces in line. printer interface) result.
(2) while DOS 3 and UCSD systems (fort_sys, pas_sys) + diag disks boot, CPM 2.x and DOS 2.x die (3) while DOS 3 and UCSD systems (fort_sys, pas_sys) + diag disks boot, CPM 2.x and DOS 2.x die
in secondary boot loader with a RESTORE (seek track 0) when track 2 sector 1 should be loaded. in secondary boot loader with a RESTORE (seek track 0) when track 2 sector 1 should be loaded.
Writing files to floppy is next to impossible on both CPM 1.x and DOS 3 (these two OS boot Writing files to floppy is next to impossible on both CPM 1.x and DOS 3 (these two OS boot
with keyboard workarounds enabled). File deletion works, so few bytes pass. with new workaround enabled). File deletion works, so few bytes pass.
(3) heavy system interaction stalls the driver. Start the RX50 diag.disk and (4) system interaction tests HALT Z80 CPU at location $0211 (forever). Boot the RX50 diag.disk
see what happens (key 3 for individual tests, then select system interaction). to see what happens (key 3 for individual tests, then select system interaction).
(4) arbitration chip (E11; in 100-A schematics or E13 in -B) should be dumped. (5) arbitration chip (E11; in 100-A schematics or E13 in -B) should be dumped.
It is a 6308 OTP ROM (2048 bit, 256 x 8) used as a lookup table (LUT) with the address pins (A) It is a 6308 OTP ROM (2048 bit, 256 x 8) used as a lookup table (LUT) with the address pins (A)
used as inputs and the data pins (D) as output. used as inputs and the data pins (D) as output.
@ -207,15 +214,10 @@ W17 pulls J1 serial port pin 1 to GND when set (chassis to logical GND).
// --------------------------------------------------------------------------- // ---------------------------------------------------------------------------
// WORKAROUNDS: // WORKAROUNDS:
// (1) FORCE LOGO: - not valid for 100-A ROM - // - tested only in conjunction with 100-B ROM -
//#define FORCE_RAINBOW_B_LOGO //#define WORKAROUND_RAINBOW_B
// (2) KEYBOARD_WORKAROUND : also requires FORCE...LOGO (and preliminary headers)
//#define KEYBOARD_WORKAROUND
//#define KBD_DELAY 8 // (debounce delay)
// --------------------------------------------------------------------------- // ---------------------------------------------------------------------------
// Define standard and maximum RAM sizes (A, then B model): // Define standard and maximum RAM sizes (A, then B model):
//#define BOARD_RAM 0x0ffff // 64 K base RAM (100-A) //#define BOARD_RAM 0x0ffff // 64 K base RAM (100-A)
//#define END_OF_RAM 0xcffff // very last byte (100-A) DO NOT CHANGE. //#define END_OF_RAM 0xcffff // very last byte (100-A) DO NOT CHANGE.
@ -261,11 +263,6 @@ public:
rainbow_state(const machine_config &mconfig, device_type type, const char *tag) : rainbow_state(const machine_config &mconfig, device_type type, const char *tag) :
driver_device(mconfig, type, tag), driver_device(mconfig, type, tag),
#ifdef KEYBOARD_WORKAROUND
#include "./m_kbd1.c"
#endif
m_inp1(*this, "W13"), m_inp1(*this, "W13"),
m_inp2(*this, "W14"), m_inp2(*this, "W14"),
m_inp3(*this, "W15"), m_inp3(*this, "W15"),
@ -365,10 +362,6 @@ public:
DECLARE_READ8_MEMBER(rtc_w); DECLARE_READ8_MEMBER(rtc_w);
#ifdef KEYBOARD_WORKAROUND
#include "./port9x_Ax.c"
#endif
UINT32 screen_update_rainbow(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect); UINT32 screen_update_rainbow(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
INTERRUPT_GEN_MEMBER(vblank_irq); INTERRUPT_GEN_MEMBER(vblank_irq);
@ -395,11 +388,6 @@ private:
IRQ_8088_NMI // 02/02 08/08 - [external MEMORY EXTENSION] - PARITY ERROR L IRQ_8088_NMI // 02/02 08/08 - [external MEMORY EXTENSION] - PARITY ERROR L
}; // HIGHEST PRIORITY }; // HIGHEST PRIORITY
#ifdef KEYBOARD_WORKAROUND
#include "./m_kbd2.c"
#endif
required_ioport m_inp1; required_ioport m_inp1;
required_ioport m_inp2; required_ioport m_inp2;
required_ioport m_inp3; required_ioport m_inp3;
@ -516,40 +504,13 @@ void rainbow_state::machine_start()
save_item(NAME(m_irq_high)); save_item(NAME(m_irq_high));
save_item(NAME(m_irq_mask)); save_item(NAME(m_irq_mask));
#ifdef FORCE_RAINBOW_B_LOGO #ifdef WORKAROUND_RAINBOW_B
UINT8 *rom = memregion("maincpu")->base(); UINT8 *rom = memregion("maincpu")->base();
if (rom[0xf4000 + 0x3ffc] == 0x31) // 100-B (5.01) 0x35 would test for V5.05
rom[0xf4000 + 0x364a] = 2 + 8; // 2 :set ; 4 : reset, 8 : set for 0xf4363 ( 0363 WAIT_FOR_BIT3__loc_35E )
rom[0xf4000 + 0x0363] = 0x90;
rom[0xf4000 + 0x0364] = 0x90;
// If bit 2 = 1 (Efff9), then a keyboard powerup is necessary (=> will lock up in current state)
rom[0xf4000 + 0x3638] = 0x80; // OR instead of TEST
rom[0xf4000 + 0x3639] = 0x0f; // OR instead of TEST
rom[0xf4000 + 0x363a] = 0x08; // 04 => 08
rom[0xf4000 + 0x363b] = 0xeb; // COND => JMPS
if (rom[0xf4174] == 0x75)
{ {
rom[0xf4174] = 0xeb; // jmps RAINBOW100_LOGO__loc_33D rom[0xf4000 + 0x0303] = 0x00; // disable CRC check
rom[0xf4175] = 0x08; rom[0xf4000 + 0x135e] = 0x00; // FLOPPY / RX-50 WORKAROUND: in case of Z80 RESPONSE FAILURE ($80 bit set in AL), do not block floppy access.
} }
if (rom[0xf4000 + 0x3ffc] == 0x31) // 100-B
rom[0xf4384] = 0xeb; // JMPS => BOOT80
if (rom[0xf4000 + 0x3ffc] == 0x35) // v5.05
rom[0xf437b] = 0xeb;
//TEST-DEBUG: always reset NVM to defaults (!)
//rom[0x3d6c] = 0x90;
//rom[0x3d6d] = 0x90;
#endif
#ifdef KEYBOARD_WORKAROUND
#include "./rainbow_keyboard0.c"
#endif #endif
} }
@ -681,12 +642,6 @@ AM_RANGE(0x69, 0x69) AM_READ(hd_status_69_r)
// =========================================================== // ===========================================================
// 0x10c // 0x10c
AM_RANGE(0x10c, 0x10c) AM_DEVWRITE("vt100_video", rainbow_video_device, dc012_w) AM_RANGE(0x10c, 0x10c) AM_DEVWRITE("vt100_video", rainbow_video_device, dc012_w)
#ifdef KEYBOARD_WORKAROUND
#include "./am_range_9x_Ax.c"
#endif
ADDRESS_MAP_END ADDRESS_MAP_END
static ADDRESS_MAP_START(rainbowz80_mem, AS_PROGRAM, 8, rainbow_state) static ADDRESS_MAP_START(rainbowz80_mem, AS_PROGRAM, 8, rainbow_state)
@ -716,9 +671,6 @@ ADDRESS_MAP_END
/* DIP switches */ /* DIP switches */
static INPUT_PORTS_START(rainbow100b_in) static INPUT_PORTS_START(rainbow100b_in)
#ifdef KEYBOARD_WORKAROUND
#include "./rainbow_ipt.c"
#endif
PORT_START("MONITOR TYPE") PORT_START("MONITOR TYPE")
PORT_DIPNAME(0x03, 0x03, "MONOCHROME MONITOR") PORT_DIPNAME(0x03, 0x03, "MONOCHROME MONITOR")
PORT_DIPSETTING(0x01, "WHITE") PORT_DIPSETTING(0x01, "WHITE")
@ -926,10 +878,6 @@ void rainbow_state::machine_reset()
m_irq_mask = 0; m_irq_mask = 0;
} }
#ifdef KEYBOARD_WORKAROUND
#include "./rainbow_keyboard2.c"
#endif
UINT32 rainbow_state::screen_update_rainbow(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect) UINT32 rainbow_state::screen_update_rainbow(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect)
{ {
/* /*
@ -956,7 +904,7 @@ void rainbow_state::update_8088_irqs()
if (m_irq_mask != 0) if (m_irq_mask != 0)
{ {
for (int i = 0; i < IRQ_8088_NMI; i++) for (int i = IRQ_8088_NMI; i >= 0; i--)
{ {
if (m_irq_mask & (1 << i)) if (m_irq_mask & (1 << i))
{ {
@ -1664,21 +1612,6 @@ WRITE_LINE_MEMBER(rainbow_state::bundle_irq)
READ8_MEMBER(rainbow_state::system_parameter_r) READ8_MEMBER(rainbow_state::system_parameter_r)
{ {
#ifdef FORCE_RAINBOW_B_LOGO
// WORKAROUND: Initialize NVRAM + VOLATILE RAM with DEFAULTS + correct RAM SIZE !
int test = (m_inp8->read() >> 16) - 2; // 0 = 128 K (!)
if (test >= 0)
{
m_p_vol_ram[0xdb] = test;
m_p_nvram[0xdb] = test;
}
// NVRAM @ 0x89 : AUTO RPT(0 = OFF 1 = ON)
m_p_nvram[0x89] = 0; // AUTO REPEAT ON (1 would be DETRIMENTAL TO "SET-UP" (80/132 + 50/60 Hz) with KEYBOARD_WORKAROUND (!)
#endif
/* Info about option boards is in bits 0 - 3: /* Info about option boards is in bits 0 - 3:
SYSTEM PARAMETER INFORMATION: see AA-P308A-TV page 92 section 14.0 SYSTEM PARAMETER INFORMATION: see AA-P308A-TV page 92 section 14.0
Bundle card (1) | Floppy (2) | Graphics (4) | Memory option (8) Bundle card (1) | Floppy (2) | Graphics (4) | Memory option (8)
@ -2179,16 +2112,10 @@ WRITE8_MEMBER(rainbow_state::diagnostic_w) // 8088 (port 0A WRITTEN). Fig.4-28 +
// KEYBOARD // KEYBOARD
void rainbow_state::update_kbd_irq() void rainbow_state::update_kbd_irq()
{ {
#ifndef KEYBOARD_WORKAROUND
if ((m_kbd_rx_ready) || (m_kbd_tx_ready)) if ((m_kbd_rx_ready) || (m_kbd_tx_ready))
{
raise_8088_irq(IRQ_8088_KBD); raise_8088_irq(IRQ_8088_KBD);
}
else else
{
lower_8088_irq(IRQ_8088_KBD); lower_8088_irq(IRQ_8088_KBD);
}
#endif
} }
WRITE_LINE_MEMBER(rainbow_state::kbd_tx) WRITE_LINE_MEMBER(rainbow_state::kbd_tx)