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abc1600: WIP. (nw)

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This commit is contained in:
Curt Coder 2016-08-15 14:47:37 +03:00
parent 384bb4f880
commit 3f353b116e
2 changed files with 9 additions and 6 deletions
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11
src/mame/drivers/abc1600.cpp
View File

@ -34,11 +34,14 @@
TODO:
- starting from MAME 0.151, the Z80 DMA reads 0x08 as the 257th byte to transfer from disk t0s14 thus failing a comparison @ 37cfa, leading to a watchdog reset
changing z80dma.cpp:477 to "done = (m_count == 0);" fixes this but isn't the real reason
- abcenix boot stuck in a loop @ 37cfa
- segment/page RAM addresses are not correctly decoded, "sas/format/format" can't find the SASI interface because of this
forcetask0 1 t0 0 t1 0 t2 0 t3 0
sega19 0 task 0
sega 000 segd 00 pga 008 pgd 4058 virtual 02c730 (should be 004730)
- segment/page RAM addresses are not correctly decoded, "sas/format/format" after abcenix is booted can't find the SASI interface because of this
[:mac] ':3f' (08A98) MAC 7e4a2:0004a2 (SEGA 02f SEGD 09 PGA 09c PGD 8000 NONX 1 WP 0)
should be
[:mac] ':3f' (089A8) MAC 7e4a2:1fe4a2 (SEGA 00f SEGD 0f PGA 0fc PGD 43fc NONX 0 WP 1)
- short/long reset (RSTBUT)
- CIO
- optimize timers!

4
src/mame/machine/abc1600mac.cpp
View File

@ -137,7 +137,7 @@ void abc1600_mac_device::device_start()
// HACK fill segment RAM or abcenix won't boot
memset(m_segment_ram, 0xcd, 0x400);
memset(m_page_ram, 0xcd, 0x400);
//memset(m_page_ram, 0xcd, 0x400);
// state saving
save_item(NAME(m_ifc2));
@ -234,7 +234,7 @@ offs_t abc1600_mac_device::translate_address(offs_t offset, int *nonx, int *wp)
*nonx = PAGE_NONX;
*wp = PAGE_WP;
if (LOG_MAC) logerror("%s MAC %05x:%06x (SEGA %03x SEGD %02x PGA %03x PGD %04x NONX %u WP %u)\n", machine().describe_context(), offset, virtual_offset, sega, segd, pga, m_page_ram[pga], *nonx, *wp);
if (LOG_MAC && offset != virtual_offset) logerror("%s MAC %05x:%06x (SEGA %03x SEGD %02x PGA %03x PGD %04x NONX %u WP %u)\n", machine().describe_context(), offset, virtual_offset, sega, segd, pga, m_page_ram[pga], *nonx, *wp);
return virtual_offset;
}