Sprinter/mame
2
0
Fork 0
mirror of https://github.com/holub/mame synced 2025-04-22 08:22:15 +03:00
Code Issues Actions Packages Projects Releases Wiki Activity

photoply: Preliminary EEPROM hookup (nw)

Browse Source
This commit is contained in:
AJR 2018-01-30 19:11:00 -05:00
parent 0450c31f10
commit 5600a008d3
1 changed files with 25 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

27
src/mame/drivers/photoply.cpp
View File

@ -13,7 +13,7 @@ TODO:
- VGA BIOS reports being a Cirrus Logic GD5436 / 5446, it is unknown what exactly this game uses.
- PCI hookups (no idea about what this uses), and improve/device-ify SiS85C49x;
- ISA bus cards are completely guessworked;
- EEPROM (most likely at i/o 0x200);
- EEPROM writes fail due to timing issues (likely unemulated wait states on port accesses);
- Eventually needs AudioDrive ES688 / ES1688 / ES1788 & ES1868 devices and serial ports "for linking" before actually booting;
@ -21,6 +21,7 @@ TODO:
#include "emu.h"
#include "cpu/i386/i386.h"
#include "machine/eepromser.h"
#include "machine/lpci.h"
#include "machine/pcshare.h"
#include "machine/pckeybrd.h"
@ -32,12 +33,15 @@ class photoply_state : public pcat_base_state
public:
photoply_state(const machine_config &mconfig, device_type type, const char *tag)
: pcat_base_state(mconfig, type, tag),
m_eeprom(*this, "eeprom"),
m_main_bios(*this, "bios"),
m_video_bios(*this, "video_bios"),
m_ex_bios(*this, "ex_bios")
{
}
required_device<eeprom_serial_93cxx_device> m_eeprom;
required_region_ptr<uint8_t> m_main_bios;
required_region_ptr<uint8_t> m_video_bios;
required_region_ptr<uint8_t> m_ex_bios;
@ -46,6 +50,7 @@ public:
DECLARE_READ8_MEMBER(bios_r);
DECLARE_WRITE8_MEMBER(bios_w);
DECLARE_WRITE8_MEMBER(eeprom_w);
uint16_t m_pci_shadow_reg;
DECLARE_DRIVER_INIT(photoply);
@ -144,6 +149,11 @@ READ8_MEMBER(photoply_state::bios_r)
// multifunction board bios
// Note: if filled with a reload on 0x4000-0x7fff it will repeat the "Combo I/O" EEPROM check (which looks unlikely)
case 1: // c8000-cffff
if ((offset & 0x7fff) == 0x3fff)
{
// other bits are unknown
return m_eeprom->do_read() << 2;
}
return m_ex_bios[offset & 0x7fff];
case 2: // d0000-dffff
case 3:
@ -167,6 +177,17 @@ WRITE8_MEMBER(photoply_state::bios_w)
}
}
WRITE8_MEMBER(photoply_state::eeprom_w)
{
//logerror("Writing %X to EEPROM output port\n", data);
m_eeprom->di_write(BIT(data, 0));
m_eeprom->clk_write(BIT(data, 1));
m_eeprom->cs_write(BIT(data, 2));
// Bits 2-3 also seem to be used to bank something else.
// Bits 4-7 are set for some writes, but may do nothing?
}
static ADDRESS_MAP_START( photoply_map, AS_PROGRAM, 32, photoply_state )
AM_RANGE(0x00000000, 0x0009ffff) AM_RAM
AM_RANGE(0x000a0000, 0x000bffff) AM_DEVREADWRITE8("vga", cirrus_gd5446_device, mem_r, mem_w, 0xffffffff)
@ -185,7 +206,7 @@ static ADDRESS_MAP_START( photoply_io, AS_IO, 32, photoply_state )
AM_RANGE(0x0170, 0x0177) AM_DEVREADWRITE("ide2", ide_controller_32_device, read_cs0, write_cs0)
AM_RANGE(0x01f0, 0x01f7) AM_DEVREADWRITE("ide", ide_controller_32_device, read_cs0, write_cs0)
AM_RANGE(0x0200, 0x0203) AM_NOP // eeprom
AM_RANGE(0x0200, 0x0203) AM_WRITE8(eeprom_w, 0x00ff0000)
// AM_RANGE(0x0278, 0x027f) AM_RAM //parallel port 2
AM_RANGE(0x0370, 0x0377) AM_DEVREADWRITE("ide2", ide_controller_32_device, read_cs1, write_cs1)
// AM_RANGE(0x0378, 0x037f) AM_RAM //parallel port
@ -291,6 +312,8 @@ MACHINE_CONFIG_START(photoply_state::photoply)
MCFG_PALETTE_ADD("palette", 0x100)
MCFG_DEVICE_ADD("vga", CIRRUS_GD5446, 0)
MCFG_EEPROM_SERIAL_93C46_ADD("eeprom")
MACHINE_CONFIG_END