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ts803: can display text and graphics, can boot from disk [Gabriele D'Antona]
This commit is contained in:
Robbbert
parent
e0deb80b54
commit
bf82e1e55c
@ -1,68 +1,555 @@
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// license:BSD-3-Clause
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// copyright-holders:Robbbert
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/***************************************************************************
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// copyright-holders: Gabriele D'Antona, Robbbert
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/*************************************************************************************************
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Skeleton driver for Televideo TS803
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TeleVideo TS-803(H)
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Driver by friol
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Started: 27/12/2015
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TODO:
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- Everything - this is just a skeleton
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Addressable memory space has 2 configurations:
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PAGE SEL bit in PORT0 set to 0:
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****************************************************************************/
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0000-2000 - 8k rom
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2000-4000 - 8k expansion rom
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4000-BFFF - videoram
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C000-FFFF - 16k cpu RAM
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PAGE SEL bit in PORT0 set to 1:
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0000-dFFF - 56k ram
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e000-FFFF - OS RAM
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Z80STI:
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- fails hardware test, left out for now.
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- provides baud-rate clock for DART ch B (serial printer)
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- merges FDC and HDC irq into the daisy chain. FDC works without it though.
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Keyboard / Z80DART:
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- Keyboard has 8048 plus undumped rom. There's no schematic.
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- Protocol: 9600 baud, 8 data bits, 2 stop bits, no parity, no handshaking.
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- Problem: every 2nd keystroke is ignored.
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- Problem: some of the disks cause the keyboard to produce rubbish, unable to find
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a baud rate that works.
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To Do:
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- Fix Z80STI and use it
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- Fix weird problem with keyboard, or better, get the rom and emulate it.
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- Hard Drive
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- Videoram has 4 banks, only first bank is currently used for display
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- Option of a further 64k of main ram.
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- Dipswitches
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- 2 more Serial ports (Serial Printer & Mouse; Modem)
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- Optional RS422 board (has Z80SIO +others)
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- Diagnostic LEDs
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- Cleanup
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- The demo refers to video attributes, but there's no mention of them anywhere else
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**************************************************************************************************/
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#include "emu.h"
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#include "bus/rs232/rs232.h"
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#include "cpu/z80/z80.h"
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#include "cpu/z80/z80daisy.h"
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#include "machine/keyboard.h"
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#include "machine/z80dart.h"
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#include "machine/wd_fdc.h"
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#include "machine/z80sti.h"
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#include "video/mc6845.h"
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class ts803_state : public driver_device
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{
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public:
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ts803_state(const machine_config &mconfig, device_type type, const char *tag)
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: driver_device(mconfig, type, tag),
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m_maincpu(*this, "maincpu")
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: driver_device(mconfig, type, tag)
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, m_palette(*this, "palette")
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, m_maincpu(*this, "maincpu")
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, m_fdc(*this, "fdc")
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, m_floppy0(*this, "fdc:0")
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, m_floppy1(*this, "fdc:1")
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//, m_sti(*this, "sti")
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, m_dart(*this, "dart")
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, m_crtc(*this,"crtc")
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{ }
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required_device<cpu_device> m_maincpu;
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DECLARE_READ8_MEMBER( ts803_port_r );
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DECLARE_WRITE8_MEMBER( ts803_port_w );
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DECLARE_READ8_MEMBER( ts803_porthi_r );
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DECLARE_WRITE8_MEMBER( ts803_porthi_w );
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DECLARE_WRITE8_MEMBER( disk_0_control_w );
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DECLARE_READ8_MEMBER( disk_0_control_r );
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DECLARE_WRITE8_MEMBER( keyboard_put );
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MC6845_UPDATE_ROW(crtc_update_row);
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MC6845_ON_UPDATE_ADDR_CHANGED(crtc_update_addr);
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DECLARE_WRITE8_MEMBER( crtc_controlreg_w );
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DECLARE_DRIVER_INIT(ts803);
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TIMER_DEVICE_CALLBACK_MEMBER(dart_tick);
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UINT32 screen_update_ts803(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
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required_device<palette_device> m_palette;
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private:
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std::unique_ptr<UINT8[]> m_videoram;
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std::unique_ptr<UINT8[]> m_56kram;
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UINT8 m_sioidxr=0;
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UINT8 m_sioarr[256];
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bool m_graphics_mode;
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bool m_tick;
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UINT8 *m_p_chargen;
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virtual void machine_reset() override;
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virtual void machine_start() override;
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required_device<cpu_device> m_maincpu;
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required_device<fd1793_t> m_fdc;
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required_device<floppy_connector> m_floppy0;
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required_device<floppy_connector> m_floppy1;
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//required_device<z80sti_device> m_sti;
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required_device<z80dart_device> m_dart;
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required_device<sy6545_1_device> m_crtc;
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};
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static ADDRESS_MAP_START(ts803_mem, AS_PROGRAM, 8, ts803_state)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x0000, 0x0fff) AM_ROM
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AM_RANGE(0x1000, 0xffff) AM_RAM
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AM_RANGE(0x0000, 0x3fff) AM_READ_BANK("bankr0") AM_WRITE_BANK("bankw0")
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AM_RANGE(0x4000, 0xbfff) AM_RAMBANK("bank4")
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AM_RANGE(0xc000, 0xffff) AM_RAM
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ADDRESS_MAP_END
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/*
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I/0 Port Addresses
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System Status Switch 1 00
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Diagnostic Indicators 1 and 2 10
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Diagnostic Indicators 3 and 4 11
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RS-422 Control and Auto Wait 12
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Memory Bank Select 13
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STI Device (modem) 20-2F
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DART Dual Asynchronous Receiver Transmitter
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Device (keyboard, printer, mouse) 30-33
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RS-422 SIO Device· 40-43
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Floppy Disk Controller 80-83
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Floppy Disk Drive Decoder 90
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Winchester Disk Controller Reset A0
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Winchester Disk Controller B0-BF
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Graphics Controller C0-CF
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*/
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static ADDRESS_MAP_START(ts803_io, AS_IO, 8, ts803_state)
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ADDRESS_MAP_END
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ADDRESS_MAP_GLOBAL_MASK(0xff)
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ADDRESS_MAP_UNMAP_HIGH
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AM_RANGE(0x00, 0x2f) AM_READWRITE(ts803_port_r, ts803_port_w)
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//AM_RANGE(0x00, 0x1f) AM_READWRITE(ts803_port_r, ts803_port_w)
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//AM_RANGE(0x20, 0x2f) AM_DEVREADWRITE("sti", z80sti_device, read, write)
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AM_RANGE(0x30, 0x33) AM_DEVREADWRITE("dart", z80dart_device, cd_ba_r, cd_ba_w)
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AM_RANGE(0x80, 0x83) AM_DEVREADWRITE("fdc", fd1793_t, read, write)
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AM_RANGE(0x90, 0x90) AM_READWRITE(disk_0_control_r,disk_0_control_w)
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//AM_RANGE(0x91, 0xff) AM_READWRITE(ts803_porthi_r, ts803_porthi_w)
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AM_RANGE(0x91, 0xbf) AM_READWRITE(ts803_porthi_r, ts803_porthi_w)
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AM_RANGE(0xc0, 0xc0) AM_DEVREADWRITE("crtc", sy6545_1_device, status_r, address_w)
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AM_RANGE(0xc2, 0xc2) AM_DEVREADWRITE("crtc", sy6545_1_device, register_r, register_w)
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AM_RANGE(0xc4, 0xc4) AM_WRITE(crtc_controlreg_w)
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ADDRESS_MAP_END
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/* Input ports */
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static INPUT_PORTS_START( ts803 )
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INPUT_PORTS_END
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/* keyboard */
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WRITE8_MEMBER( ts803_state::keyboard_put )
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{
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if (data)
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{
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//printf("Keyboard stroke [%2x]\n",data);
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//m_maincpu->set_input_line_vector(INPUT_LINE_IRQ0, 0x3f);
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//m_maincpu->set_input_line(INPUT_LINE_IRQ0, ASSERT_LINE);
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if (data==0x0d) m_maincpu->space(AS_PROGRAM).write_byte(0xf83f,0xC1);
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else
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{
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m_maincpu->space(AS_PROGRAM).write_byte(0xf83f,0x4f);
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m_maincpu->space(AS_PROGRAM).write_byte(0xf890,data);
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}
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}
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}
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/* disk drive */
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static SLOT_INTERFACE_START( ts803_floppies )
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SLOT_INTERFACE( "drive0", FLOPPY_525_DD )
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SLOT_INTERFACE( "drive1", FLOPPY_525_DD )
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SLOT_INTERFACE_END
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WRITE8_MEMBER( ts803_state::disk_0_control_w )
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{
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/*
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d0 ready
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d1 motor on
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d2 Side select (active low)
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d3 Double density (active low)
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d4 Drive select 0 (active low)
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d5 Drive select 1 (active low)
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d6 Drive select 2 (active low)
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d7 Drive select 3 (active low)
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*/
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if ((data & 0xc0)!=0xc0) return;
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floppy_image_device *floppy = nullptr;
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if (BIT(data, 4)==0)
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floppy = m_floppy0->get_device();
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else
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if (BIT(data, 5)==0)
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floppy = m_floppy1->get_device();
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m_fdc->set_floppy(floppy);
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floppy->mon_w(BIT(data, 1));
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floppy->ss_w(BIT(data, 2) ? 0: 1);
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m_fdc->dden_w(BIT(data, 3));
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}
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READ8_MEMBER( ts803_state::disk_0_control_r )
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{
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printf("Disk0 control register read\n");
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return 0xff;
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}
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READ8_MEMBER( ts803_state::ts803_porthi_r )
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{
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//printf("PortHI read [%x]\n",offset+0x91);
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switch(offset+0x91)
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{
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case 0xb2:
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printf("B2 WDC read\n");
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return 0x11;
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case 0xb3:
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printf("B3 WDC read\n");
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return 0x15;
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case 0xb4:
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printf("B4 WDC read\n");
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return 0x55;
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case 0xb5:
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printf("B5 WDC read\n");
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return 0x01;
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case 0xb6:
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printf("B6 WDC read\n");
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return 0x25;
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}
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return 0x00;
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}
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WRITE8_MEMBER( ts803_state::ts803_porthi_w )
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{
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//printf("PortHI write [%2x] [%2x]\n",offset+0x91,data);
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switch (offset+0x91)
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{
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case 0xc4:
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//printf("Control Register for Alpha or Graphics Mode Selection\n");
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break;
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default:
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break;
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}
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}
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READ8_MEMBER( ts803_state::ts803_port_r )
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{
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printf("Port read [%x]\n",offset);
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switch (offset)
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{
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case 0x00:
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// system status switch 1 (dip switches)
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// 0,1,2: baud rate
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// 3: ts803-ts803h
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// 4: local-remote
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// 5: required (?)
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// 6: 60hz-50hz
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// 7: required
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return 0x80;
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case 0x20:
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// STI read (at boot time)
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return 0x55;
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case 0x26:
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// STI read (at boot time)
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return 0x55;
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case 0x27:
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// STI read (at boot time)
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return 0x55;
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case 0x2a:
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// STI read (at boot time)
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return 0x55;
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case 0x2d:
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// STI
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return 0x00;
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case 0x2b:
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// STI read (at boot time)
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return 0x55;
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case 0x42:
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// SIO
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m_sioidxr++;
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return m_sioarr[m_sioidxr-1];
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default:
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return 0xff;
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}
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return 0xff;
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}
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WRITE8_MEMBER( ts803_state::ts803_port_w )
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{
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//printf("Port write [%2x] [%2x]\n",offset,data);
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switch (offset)
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{
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case 0x00:
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printf("Writing on system status switch\n");
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break;
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case 0x10:
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data &= 3;
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printf("Writing to diagnostic indicators 1 & 2: %X\n", data);
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break;
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case 0x11:
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data &= 3;
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printf("Writing to diagnostic indicators 3 & 4: %X\n", data);
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break;
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case 0x12:
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data &= 3;
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printf("RS-422 control: %X\n", data);
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break;
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case 0x13:
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data &= 3;
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if (BIT(data, 1)==0)
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{
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membank("bankr0")->set_entry(BIT(data, 0));
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membank("bank4")->set_entry(BIT(data, 0));
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}
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else
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printf("Error: unknown memory config: %X.\n", data);
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break;
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case 0x20: case 0x21: case 0x22: case 0x23: case 0x24: case 0x25: case 0x26: case 0x27: case 0x28: case 0x29:
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case 0x2A: case 0x2b: case 0x2c: case 0x2d: case 0x2e: case 0x2f:
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//printf("STI device write [%2x]\n",data);
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break;
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default:
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printf("unknown port [%2.2x] write of [%2.2x]\n",offset,data);
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break;
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}
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}
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MC6845_ON_UPDATE_ADDR_CHANGED( ts803_state::crtc_update_addr )
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{
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//printf("CRTC::address update [%x]\n",address);
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}
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MC6845_UPDATE_ROW( ts803_state::crtc_update_row )
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{
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const rgb_t *pens = m_palette->palette()->entry_list_raw();
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UINT8 chr,gfx,inv;
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UINT16 mem,x;
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UINT32 *p = &bitmap.pix32(y);
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for (x = 0; x < x_count; x++)
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{
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inv = (x == cursor_x) ? 0xff : 0;
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if (m_graphics_mode)
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{
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mem = (ra*0x2000 + ma + x) & 0x7fff;
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gfx = m_videoram[mem] ^ inv;
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}
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else
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{
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mem = 0x1800 + ((ma + x) & 0x7ff);
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chr = m_videoram[mem];
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gfx = (ra > 7) ? 0 : m_p_chargen[(chr<<3) | ((ra+1)&7)] ^ inv;
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}
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/* Display a scanline of a character (8 pixels) */
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*p++ = pens[BIT(gfx, 7)];
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*p++ = pens[BIT(gfx, 6)];
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*p++ = pens[BIT(gfx, 5)];
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*p++ = pens[BIT(gfx, 4)];
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*p++ = pens[BIT(gfx, 3)];
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*p++ = pens[BIT(gfx, 2)];
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*p++ = pens[BIT(gfx, 1)];
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*p++ = pens[BIT(gfx, 0)];
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}
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}
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WRITE8_MEMBER( ts803_state::crtc_controlreg_w )
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{
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/*
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Bit 0 = 0 alpha mode
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1 graphics mode
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Bit 1 = 0 page 1 (alpha mode only)
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1 page 2 (alpha mode only)
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Bit 2 = 0 alpha memory access (round off)
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1 graphics memory access (normal CPU address)
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*/
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//printf("CRTC::c4 write [%2x]\n",data);
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m_graphics_mode = BIT(data, 0);
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}
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// baud rate generator for keyboard, 9600 baud.
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TIMER_DEVICE_CALLBACK_MEMBER( ts803_state::dart_tick )
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{
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m_tick ^= 1;
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m_dart->rxca_w(m_tick);
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m_dart->txca_w(m_tick);
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m_dart->txcb_w(m_tick); // needed to pass the test
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}
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void ts803_state::machine_start()
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{
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//save these 2 so we can examine them in the debugger
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save_pointer(NAME(m_videoram.get()), 0x8000);
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save_pointer(NAME(m_56kram.get()), 0xc000);
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}
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void ts803_state::machine_reset()
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{
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m_graphics_mode = false;
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m_tick = 0;
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m_sioarr[0]=0x00;
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m_sioarr[1]=0xff;
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//m_sti->reset();
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membank("bankr0")->set_entry(0);
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membank("bankw0")->set_entry(0);
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membank("bank4")->set_entry(0);
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}
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DRIVER_INIT_MEMBER( ts803_state, ts803 )
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{
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m_videoram = std::make_unique<UINT8[]>(0x8000);
|
||||
m_56kram = std::make_unique<UINT8[]>(0xc000);
|
||||
|
||||
m_p_chargen = memregion("chargen")->base();
|
||||
UINT8 *rom = memregion("roms")->base();
|
||||
membank("bankr0")->configure_entry(0, &rom[0]); // rom
|
||||
membank("bankr0")->configure_entry(1, m_56kram.get()); // ram
|
||||
membank("bankw0")->configure_entry(0, m_56kram.get()); // ram
|
||||
membank("bank4")->configure_entry(0, m_videoram.get()); // vram
|
||||
membank("bank4")->configure_entry(1, m_56kram.get()+0x4000); // ram
|
||||
}
|
||||
|
||||
/* Interrupt priority:
|
||||
0: RS-422 option board (highest priority)
|
||||
1: Z80A DART (RS-232C serial I/O)
|
||||
2: Z80 STI (RS 232C modem port)
|
||||
3: FD 1793 floppy disk controller
|
||||
4: Winchester disk controller board
|
||||
5: Time-of-day clock
|
||||
Interrupts 0 through 2 are prioritized in a daisy-chain
|
||||
arrangement. Interrupts 3 through 5 are wired to the Z80 STI
|
||||
interrupt input pins. */
|
||||
static const z80_daisy_config daisy_chain[] =
|
||||
{
|
||||
//{ "rs422" }, // not emulated
|
||||
{ "dart" },
|
||||
//{ "sti" },
|
||||
{ nullptr }
|
||||
};
|
||||
|
||||
static MACHINE_CONFIG_START( ts803, ts803_state )
|
||||
/* basic machine hardware */
|
||||
MCFG_CPU_ADD("maincpu", Z80, 4000000)
|
||||
MCFG_CPU_ADD("maincpu", Z80, XTAL_16MHz/4)
|
||||
MCFG_CPU_PROGRAM_MAP(ts803_mem)
|
||||
MCFG_CPU_IO_MAP(ts803_io)
|
||||
MCFG_CPU_CONFIG(daisy_chain)
|
||||
|
||||
/* video hardware */
|
||||
MCFG_SCREEN_ADD("screen", RASTER)
|
||||
MCFG_SCREEN_REFRESH_RATE(60)
|
||||
MCFG_SCREEN_SIZE(640,240)
|
||||
MCFG_SCREEN_VISIBLE_AREA(0, 640-1, 0, 240-1)
|
||||
MCFG_SCREEN_UPDATE_DEVICE("crtc", sy6545_1_device, screen_update)
|
||||
MCFG_PALETTE_ADD_MONOCHROME_GREEN("palette")
|
||||
|
||||
/* crtc */
|
||||
MCFG_MC6845_ADD("crtc", SY6545_1, "screen", 13608000 / 8)
|
||||
MCFG_MC6845_SHOW_BORDER_AREA(false)
|
||||
MCFG_MC6845_CHAR_WIDTH(8)
|
||||
MCFG_MC6845_UPDATE_ROW_CB(ts803_state, crtc_update_row)
|
||||
MCFG_MC6845_ADDR_CHANGED_CB(ts803_state, crtc_update_addr)
|
||||
|
||||
//MCFG_DEVICE_ADD("sti", Z80STI, XTAL_16MHz/4) // STI baud rates are derived from XTAL_16MHz / 13
|
||||
//MCFG_Z80STI_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
|
||||
|
||||
MCFG_Z80DART_ADD("dart", XTAL_16MHz / 4, 0, 0, 0, 0 )
|
||||
MCFG_Z80DART_OUT_INT_CB(INPUTLINE("maincpu", INPUT_LINE_IRQ0))
|
||||
//MCFG_Z80DART_OUT_TXDA_CB(DEVWRITELINE("rs232", rs232_port_device, write_txd))
|
||||
//MCFG_Z80DART_OUT_DTRA_CB(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
|
||||
//MCFG_Z80DART_OUT_RTSA_CB(DEVWRITELINE("rs232", rs232_port_device, write_rts))
|
||||
|
||||
MCFG_RS232_PORT_ADD("rs232", default_rs232_devices, "keyboard")
|
||||
MCFG_RS232_RXD_HANDLER(DEVWRITELINE("dart", z80dart_device, rxa_w))
|
||||
//MCFG_RS232_CTS_HANDLER(DEVWRITELINE("dart", z80dart_device, ctsa_w))
|
||||
|
||||
/* floppy disk */
|
||||
MCFG_FD1793_ADD("fdc", XTAL_1MHz)
|
||||
//MCFG_WD_FDC_INTRQ_CALLBACK(DEVWRITELINE("sti", z80sti_device, i7_w)) // add when sti is in
|
||||
MCFG_FLOPPY_DRIVE_ADD("fdc:0", ts803_floppies, "drive0", floppy_image_device::default_floppy_formats)
|
||||
MCFG_FLOPPY_DRIVE_ADD("fdc:1", ts803_floppies, "drive1", floppy_image_device::default_floppy_formats)
|
||||
MCFG_FLOPPY_DRIVE_SOUND(true)
|
||||
|
||||
/* keyboard */
|
||||
//MCFG_DEVICE_ADD("keyboard", GENERIC_KEYBOARD, 0)
|
||||
//MCFG_GENERIC_KEYBOARD_CB(WRITE8(ts803_state, keyboard_put))
|
||||
MCFG_TIMER_DRIVER_ADD_PERIODIC("dart_tick", ts803_state, dart_tick, attotime::from_hz(153600*2))
|
||||
|
||||
MACHINE_CONFIG_END
|
||||
|
||||
/* ROM definition */
|
||||
ROM_START( ts803h )
|
||||
ROM_REGION(0x10000, "maincpu", 0)
|
||||
ROM_LOAD( "180001-37 rev d 803 5 23 84", 0x0000, 0x2000, CRC(0aa658a7) SHA1(42d0a89c2ff9b6588cd88bdb1f800fac540dccbb) )
|
||||
ROM_REGION(0x4000, "roms", ROMREGION_ERASEFF) // includes space for optional expansion rom
|
||||
ROM_LOAD( "180001-37 rev d 803 5 23 84.a57", 0x0000, 0x2000, CRC(0aa658a7) SHA1(42d0a89c2ff9b6588cd88bdb1f800fac540dccbb) )
|
||||
|
||||
ROM_REGION(0x10000, "proms", 0)
|
||||
ROM_LOAD( "8000134.bin", 0x000, 0x100, CRC(231fe6d6) SHA1(3c052ba4b74547e0e2451fa1ae67bbcb83a18bab) )
|
||||
ROM_REGION(0x0100, "proms", 0)
|
||||
ROM_LOAD( "8000134.a59", 0x0000, 0x0100, CRC(231fe6d6) SHA1(3c052ba4b74547e0e2451fa1ae67bbcb83a18bab) )
|
||||
|
||||
ROM_REGION(0x0800, "chargen", 0)
|
||||
ROM_LOAD( "803h_vid.a119", 0x0000, 0x0800, CRC(d5ce2814) SHA1(ce527479464757223dffac384a85ab74b174952c) )
|
||||
ROM_END
|
||||
|
||||
/* Driver */
|
||||
|
||||
/* YEAR NAME PARENT COMPAT MACHINE INPUT STATE INIT COMPANY FULLNAME FLAGS */
|
||||
COMP( 19??, ts803h, 0, 0, ts803, ts803, driver_device, 0, "Televideo", "TS803H", MACHINE_IS_SKELETON )
|
||||
|
||||
/* YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS */
|
||||
COMP(1983, ts803h, 0, 0, ts803, ts803, ts803_state, ts803, "Televideo", "TS803H", MACHINE_NOT_WORKING )
|
||||
|
||||
Loading…
Reference in New Issue
Block a user