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abc800: WIP (nw)

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This commit is contained in:
Curt Coder 2018-04-30 10:49:58 +03:00
parent 65527a0530
commit 941c86be52
2 changed files with 60 additions and 0 deletions
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57
src/mame/drivers/abc80x.cpp
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@ -1085,6 +1085,61 @@ void abc806_state::machine_reset()
}
QUICKLOAD_LOAD_MEMBER( abc800_state, bac )
{
address_space &space = m_maincpu->space(AS_PROGRAM);
std::vector<uint8_t> data;
data.resize(quickload_size);
image.fread(&data[0], quickload_size);
uint8_t prstat = data[2];
uint16_t prgsz = (data[5] << 8) | data[4];
uint16_t varsz = (data[7] << 8) | data[6];
uint16_t varad = (data[9] << 8) | data[8];
uint16_t comsz = (data[13] << 8) | data[12];
uint16_t comcs = (data[14] << 8) | data[15];
uint16_t comtop = 0x8000 + comsz;
uint16_t vartb = comtop;
uint16_t heap = 0x8000 + comsz + varad;
uint16_t bofa = 0xf169 - prgsz - 8;
uint16_t eofa = bofa;
for (int i = 0; i < prgsz; i++) {
space.write_byte(eofa++, data[i]);
}
eofa--;
for (int i = prgsz; i < quickload_size; i++) {
space.write_byte(heap++, data[i]);
}
heap = 0x8000 + comsz + varsz;
space.write_byte(0xff06, bofa & 0xff);
space.write_byte(0xff07, bofa >> 8);
space.write_byte(0xff08, eofa & 0xff);
space.write_byte(0xff09, eofa >> 8);
space.write_byte(0xff0a, heap & 0xff);
space.write_byte(0xff0b, heap >> 8);
space.write_byte(0xff26, prstat);
space.write_byte(0xff2c, vartb & 0xff);
space.write_byte(0xff2d, vartb >> 8);
space.write_byte(0xff30, comtop & 0xff);
space.write_byte(0xff31, comtop >> 8);
space.write_byte(0xff32, comcs & 0xff);
space.write_byte(0xff33, comcs >> 8);
return image_init_result::PASS;
}
//**************************************************************************
// MACHINE DRIVERS
@ -1239,6 +1294,8 @@ MACHINE_CONFIG_START(abc800m_state::abc800m)
// software list
MCFG_SOFTWARE_LIST_ADD("flop_list", "abc800")
MCFG_SOFTWARE_LIST_ADD("hdd_list", "abc800_hdd")
MCFG_QUICKLOAD_ADD("quickload", abc800_state, bac, "bac", 2)
MACHINE_CONFIG_END

3
src/mame/includes/abc80x.h
View File

@ -11,6 +11,7 @@
#include "cpu/z80/z80daisy.h"
#include "cpu/mcs48/mcs48.h"
#include "imagedev/cassette.h"
#include "imagedev/snapquik.h"
#include "bus/abckb/abckb.h"
#include "bus/abckb/abc800kb.h"
#include "machine/e0516.h"
@ -128,6 +129,8 @@ public:
DECLARE_WRITE_LINE_MEMBER( sio_dtrb_w );
DECLARE_WRITE_LINE_MEMBER( sio_rtsb_w );
DECLARE_QUICKLOAD_LOAD_MEMBER( bac );
// memory state
bool m_fetch_charram; // opcode fetched from character RAM region (0x7800-0x7fff)
uint16_t m_char_ram_start;