f6612fb33b
A lot of clean ups from waltje; Start of a directory structure for the code, thanks to waltje.
38 lines
852 B
C
38 lines
852 B
C
/* Copyright holders: Sarah Walker
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see COPYING for more details
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*/
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#include "ibm.h"
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#include "cpu/cpu.h"
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#include "io.h"
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#include "acer386sx.h"
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static int acer_index = 0;
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static uint8_t acer_regs[256];
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void acer386sx_write(uint16_t addr, uint8_t val, void *priv)
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{
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if (addr & 1)
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acer_regs[acer_index] = val;
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else
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acer_index = val;
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}
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uint8_t acer386sx_read(uint16_t addr, void *priv)
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{
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if (addr & 1)
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{
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if ((acer_index >= 0xc0 || acer_index == 0x20) && cpu_iscyrix)
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return 0xff; /*Don't conflict with Cyrix config registers*/
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return acer_regs[acer_index];
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}
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else
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return acer_index;
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}
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void acer386sx_init()
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{
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io_sethandler(0x0022, 0x0002, acer386sx_read, NULL, NULL, acer386sx_write, NULL, NULL, NULL);
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}
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