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(MESS) vt131/vt102: preliminary redump of 23-226e4 ROM based on rearranged quarters of two bad dumps; seems to boot but gets stuck waiting for an unmapped io or interrupt? Needs verification redump to find whether the stitched dump is correct or not. Also we could use scans of the EK-VT101-TM or MP-01066 sheets, if anyone has them. [pjustice, Lord Nightmare]

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vt100.c: preliminary i8251 PUSART hookup, not working yet. [Lord Nightmare]
This commit is contained in:
Jonathan Gevaryahu 2012-12-18 07:21:48 +00:00
parent abaa5ac3aa
commit fc9b3da1ee
1 changed files with 36 additions and 14 deletions
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46
src/mess/drivers/vt100.c
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@ -20,6 +20,7 @@
#include "emu.h" #include "emu.h"
#include "cpu/i8085/i8085.h" #include "cpu/i8085/i8085.h"
#include "cpu/z80/z80.h" #include "cpu/z80/z80.h"
#include "machine/i8251.h"
#include "sound/beep.h" #include "sound/beep.h"
#include "video/vtvideo.h" #include "video/vtvideo.h"
#include "vt100.lh" #include "vt100.lh"
@ -32,13 +33,15 @@ public:
: driver_device(mconfig, type, tag), : driver_device(mconfig, type, tag),
m_maincpu(*this, "maincpu"), m_maincpu(*this, "maincpu"),
m_crtc(*this, "vt100_video"), m_crtc(*this, "vt100_video"),
m_speaker(*this, BEEPER_TAG) m_speaker(*this, BEEPER_TAG),
, m_uart(*this, "i8251"),
m_p_ram(*this, "p_ram"){ } m_p_ram(*this, "p_ram")
{ }
required_device<cpu_device> m_maincpu; required_device<cpu_device> m_maincpu;
required_device<vt100_video_device> m_crtc; required_device<vt100_video_device> m_crtc;
required_device<beep_device> m_speaker; required_device<beep_device> m_speaker;
required_device<i8251_device> m_uart;
DECLARE_READ8_MEMBER(vt100_flags_r); DECLARE_READ8_MEMBER(vt100_flags_r);
DECLARE_WRITE8_MEMBER(vt100_keyboard_w); DECLARE_WRITE8_MEMBER(vt100_keyboard_w);
DECLARE_READ8_MEMBER(vt100_keyboard_r); DECLARE_READ8_MEMBER(vt100_keyboard_r);
@ -177,7 +180,8 @@ static ADDRESS_MAP_START(vt100_io, AS_IO, 8, vt100_state)
ADDRESS_MAP_UNMAP_HIGH ADDRESS_MAP_UNMAP_HIGH
ADDRESS_MAP_GLOBAL_MASK(0xff) ADDRESS_MAP_GLOBAL_MASK(0xff)
// 0x00, 0x01 PUSART (Intel 8251) // 0x00, 0x01 PUSART (Intel 8251)
// AM_RANGE (0x00, 0x01) AM_RANGE (0x00, 0x00) AM_DEVREADWRITE("i8251", i8251_device, data_r, data_w)
AM_RANGE (0x01, 0x01) AM_DEVREADWRITE("i8251", i8251_device, status_r, control_w)
// 0x02 Baud rate generator // 0x02 Baud rate generator
AM_RANGE (0x02, 0x02) AM_WRITE(vt100_baud_rate_w) AM_RANGE (0x02, 0x02) AM_WRITE(vt100_baud_rate_w)
// 0x22 Modem buffer // 0x22 Modem buffer
@ -404,8 +408,19 @@ static GFXDECODE_START( vt100 )
GFXDECODE_ENTRY( "chargen", 0x0000, vt100_charlayout, 0, 1 ) GFXDECODE_ENTRY( "chargen", 0x0000, vt100_charlayout, 0, 1 )
GFXDECODE_END GFXDECODE_END
/* TODO: i8251: connect me up! */
#define XTAL_24_8832MHz 24883200 static const i8251_interface i8251_intf =
{
DEVCB_NULL, // in_rxd_cb
DEVCB_NULL, // out_txd_cb
DEVCB_NULL, // in_dsr_cb
DEVCB_NULL, // out_dtr_cb
DEVCB_NULL, // out_rts_cb
DEVCB_NULL, // out_rxrdy_cb
DEVCB_NULL, // out_txrdy_cb
DEVCB_NULL, // out_txempty_cb
DEVCB_NULL // out_syndet_cb
};
static MACHINE_CONFIG_START( vt100, vt100_state ) static MACHINE_CONFIG_START( vt100, vt100_state )
/* basic machine hardware */ /* basic machine hardware */
@ -431,6 +446,11 @@ static MACHINE_CONFIG_START( vt100, vt100_state )
MCFG_VT100_VIDEO_ADD("vt100_video", vt100_video_interface) MCFG_VT100_VIDEO_ADD("vt100_video", vt100_video_interface)
/* i8251 uart */
MCFG_I8251_ADD("i8251", i8251_intf)
/* audio hardware */ /* audio hardware */
MCFG_SPEAKER_STANDARD_MONO("mono") MCFG_SPEAKER_STANDARD_MONO("mono")
MCFG_SOUND_ADD(BEEPER_TAG, BEEP, 0) MCFG_SOUND_ADD(BEEPER_TAG, BEEP, 0)
@ -748,8 +768,9 @@ ROM_START( vt101 ) // p/n 5414185-01 'unupgradable/low cost' vt101/vt102/vt131 m
// does not have integrated STP or AVO populated // does not have integrated STP or AVO populated
// 8085 based instead of I8080 // 8085 based instead of I8080
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "23-???e4-00.e71", 0x0000, 0x2000, NO_DUMP) ROM_LOAD( "23-???e4-00.e71", 0x0000, 0x2000, NO_DUMP) // rom is unique to vt101
ROM_LOAD( "23-???e4-00.e69", 0x8000, 0x2000, NO_DUMP) //e69 socket is empty/unpopulated on vt101?
//e67 socket is empty/unpopulated on vt101?
ROM_REGION(0x1000, "chargen", 0) ROM_REGION(0x1000, "chargen", 0)
ROM_LOAD( "23-018e2-00.e3", 0x0000, 0x0800, CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) ROM_LOAD( "23-018e2-00.e3", 0x0000, 0x0800, CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53))
@ -761,8 +782,9 @@ ROM_START( vt102 ) // p/n 5414185-01 'unupgradable/low cost' vt101/vt102/vt131 m
// ROMS have the set up page C in them // ROMS have the set up page C in them
// 8085 based instead of I8080 // 8085 based instead of I8080
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "23-226e4-00.e71", 0x0000, 0x2000, BAD_DUMP CRC(339d4e4e) SHA1(f1b08f2c6bbc2b234f3f43bd800a2615f6dd18d3)) // is this right for vt102? A11 stuck high ROM_LOAD( "23-226e4-00.e71", 0x0000, 0x2000, BAD_DUMP CRC(85c9279a) SHA1(3283D27E9C45D9E384227A7E6E98EE8D54B92BCB)) // shared with vt131; dump may be bad, assembled from quarters two bad dumps
ROM_LOAD( "23-225e4-00.e69", 0x8000, 0x2000, CRC(3567c760) SHA1(672473162e9c92cd237e4dbf92c2700a31C5374b)) ROM_LOAD( "23-225e4-00.e69", 0x8000, 0x2000, CRC(3567c760) SHA1(672473162e9c92cd237e4dbf92c2700a31C5374b)) // shared with vt131
//e67 socket is empty but populated on vt102
ROM_REGION(0x1000, "chargen", 0) ROM_REGION(0x1000, "chargen", 0)
ROM_LOAD( "23-018e2-00.e3", 0x0000, 0x0800, CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53)) ROM_LOAD( "23-018e2-00.e3", 0x0000, 0x0800, CRC(6958458b) SHA1(103429674fc01c215bbc2c91962ae99231f8ae53))
@ -774,8 +796,8 @@ ROM_START( vt131 ) // p/n 5414185-01 'unupgradable/low cost' vt101/vt131 mainboa
// ROMS have the set up page C in them // ROMS have the set up page C in them
// 8085 based instead of I8080 // 8085 based instead of I8080
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF ) ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "23-226e4-00.e71", 0x0000, 0x2000, BAD_DUMP CRC(339d4e4e) SHA1(f1b08f2c6bbc2b234f3f43bd800a2615f6dd18d3)) // A11 stuck high ROM_LOAD( "23-226e4-00.e71", 0x0000, 0x2000, BAD_DUMP CRC(85c9279a) SHA1(3283D27E9C45D9E384227A7E6E98EE8D54B92BCB)) // shared with vt102; dump may be bad, assembled from quarters two bad dumps
ROM_LOAD( "23-225e4-00.e69", 0x8000, 0x2000, CRC(3567c760) SHA1(672473162e9c92cd237e4dbf92c2700a31C5374b)) ROM_LOAD( "23-225e4-00.e69", 0x8000, 0x2000, CRC(3567c760) SHA1(672473162e9c92cd237e4dbf92c2700a31C5374b)) // shared with vt102
ROM_LOAD( "23-280e2-00.e67", 0xA000, 0x0800, CRC(71b4172e) SHA1(5a82c7dc313bb92b9829eb8350840e072825a797)) // called "VT131 ROM" in the vt101 quick reference guide ROM_LOAD( "23-280e2-00.e67", 0xA000, 0x0800, CRC(71b4172e) SHA1(5a82c7dc313bb92b9829eb8350840e072825a797)) // called "VT131 ROM" in the vt101 quick reference guide
ROM_REGION(0x1000, "chargen", 0) ROM_REGION(0x1000, "chargen", 0)