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New machine: zex8085 (Zexall tester for i8085).

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(nw) All tests pass on a real machine but fail in MAME.
This commit is contained in:
Robbbert 2020-06-04 03:16:20 +10:00
parent fcffa54b2b
commit 862ca247e1
2 changed files with 44 additions and 22 deletions
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63
src/mame/drivers/zexall.cpp
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@ -9,6 +9,8 @@
NOTE: there's a modified version of this driver in src/zexall
2020-06-04 Added zex8085, it's a modified version of zexall, by Ian Bartholomew. CRCs were obtained by running it on a real machine.
http://www.vcfed.org/forum/showthread.php?74993
Memory map:
@ -26,6 +28,7 @@
#include "emu.h"
#include "cpu/z80/z80.h"
#include "cpu/i8085/i8085.h"
#include "machine/terminal.h"
class zexall_state : public driver_device
@ -39,24 +42,25 @@ public:
{ }
void zexall(machine_config &config);
void zex8085(machine_config &config);
private:
uint8_t output_ack_r();
uint8_t output_req_r();
uint8_t output_data_r();
void output_ack_w(uint8_t data);
void output_req_w(uint8_t data);
void output_data_w(uint8_t data);
u8 output_ack_r();
u8 output_req_r();
u8 output_data_r();
void output_ack_w(u8 data);
void output_req_w(u8 data);
void output_data_w(u8 data);
void mem_map(address_map &map);
required_device<cpu_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
required_shared_ptr<uint8_t> m_main_ram;
uint8_t m_out_data; // byte written to 0xFFFF
uint8_t m_out_req; // byte written to 0xFFFE
uint8_t m_out_req_last; // old value at 0xFFFE before the most recent write
uint8_t m_out_ack; // byte written to 0xFFFC
required_shared_ptr<u8> m_main_ram;
u8 m_out_data; // byte written to 0xFFFF
u8 m_out_req; // byte written to 0xFFFE
u8 m_out_req_last; // old value at 0xFFFE before the most recent write
u8 m_out_ack; // byte written to 0xFFFC
virtual void machine_start() override;
virtual void machine_reset() override;
@ -85,8 +89,8 @@ void zexall_state::machine_reset()
m_out_data = 0;
// program is self-modifying, so need to refresh it on each run
uint8_t *program = memregion("maincpu")->base();
memcpy(m_main_ram, program, 0x10000);
u8 *program = memregion("maincpu")->base();
memcpy(m_main_ram, program, 0x8000);
}
@ -94,7 +98,7 @@ void zexall_state::machine_reset()
I/O Handlers
******************************************************************************/
uint8_t zexall_state::output_ack_r()
u8 zexall_state::output_ack_r()
{
// spit out the byte in out_byte if out_req is not equal to out_req_last
if (m_out_req != m_out_req_last)
@ -106,28 +110,28 @@ uint8_t zexall_state::output_ack_r()
return m_out_ack;
}
void zexall_state::output_ack_w(uint8_t data)
void zexall_state::output_ack_w(u8 data)
{
m_out_ack = data;
}
uint8_t zexall_state::output_req_r()
u8 zexall_state::output_req_r()
{
return m_out_req;
}
void zexall_state::output_req_w(uint8_t data)
void zexall_state::output_req_w(u8 data)
{
m_out_req_last = m_out_req;
m_out_req = data;
}
uint8_t zexall_state::output_data_r()
u8 zexall_state::output_data_r()
{
return m_out_data;
}
void zexall_state::output_data_w(uint8_t data)
void zexall_state::output_data_w(u8 data)
{
m_out_data = data;
}
@ -168,21 +172,38 @@ void zexall_state::zexall(machine_config &config)
GENERIC_TERMINAL(config, m_terminal, 0);
}
void zexall_state::zex8085(machine_config &config)
{
/* basic machine hardware */
I8085A(config, m_maincpu, XTAL(4'000'000));
m_maincpu->set_addrmap(AS_PROGRAM, &zexall_state::mem_map);
/* video hardware */
GENERIC_TERMINAL(config, m_terminal, 0);
}
/******************************************************************************
ROM Definitions
******************************************************************************/
ROM_START( zexall )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
ROM_REGION( 0x8000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "interface.bin", 0x0000, 0x0051, CRC(4292a574) SHA1(d3ed6d84e2b64e51598f36b4f290972963e1eb6d) ) // written directly in machine code
ROM_LOAD( "zexall.bin", 0x0100, 0x2189, CRC(b6f869c3) SHA1(14021f75c1bc9f26688969581065a0efff3af59c) )
ROM_END
ROM_START( zex8085 )
ROM_REGION( 0x8000, "maincpu", ROMREGION_ERASEFF )
ROM_LOAD( "interface.bin", 0x0000, 0x0051, CRC(4292a574) SHA1(d3ed6d84e2b64e51598f36b4f290972963e1eb6d) ) // written directly in machine code
ROM_LOAD( "zex8085.bin", 0x0100, 0x1200, CRC(3545bdbd) SHA1(4d6a2205881b62fae459ed9d908ecf7479d1d06c) ) // rename this to .com and run under CP/M
ROM_END
/******************************************************************************
Drivers
******************************************************************************/
// YEAR NAME PARENT COMPAT MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS
COMP( 2009, zexall, 0, 0, zexall, zexall, zexall_state, empty_init, "Frank Cringle / Kevin Horton", "Zexall (FPGA Z80 test interface)", MACHINE_SUPPORTS_SAVE )
COMP( 2009, zexall, 0, 0, zexall, zexall, zexall_state, empty_init, "Frank Cringle / Kevin Horton", "Zexall (FPGA Z80 test interface)", MACHINE_SUPPORTS_SAVE )
COMP( 2009, zex8085, 0, 0, zexall, zexall, zexall_state, empty_init, "Ian Bartholomew / Kevin Horton", "Zexall (i8085)", MACHINE_SUPPORTS_SAVE )

3
src/mame/mame.lst
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@ -1343,7 +1343,7 @@ tonpuu // 200?, ANES
@source:angelkds.cpp
angelkds // 833-6599 (c) 1988 Sega / Nasco?
spcpostn // (c) 1986 Sega / Nasco"
spcpostn // (c) 1986 Sega / Nasco
@source:anzterm.cpp
anzterm // Burroughs EF315-I220
@ -42054,6 +42054,7 @@ zerozone // (c) 1993 Comad
@source:zexall.cpp
zexall // zexall z80 test suite with kevtris' preloader/serial interface at 0000-00ff
zex8085 // i8085 Ian Bartholomew
@source:zms8085.cpp
zephyr //