36 lines
600 B
C
36 lines
600 B
C
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#include <cstring>
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#include <string.h>
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#include <stdint.h>
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#include "../bus.h"
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#define VIDEO_BASE_ADDR 0xFFFB8000
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static uint16_t memory[320*200];
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static int
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read(uint32_t addr, void *data, size_t sz)
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{
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addr = addr - VIDEO_BASE_ADDR;
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memcpy(data, ((uint8_t *)memory) + addr, sz);
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return (sz);
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}
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static int
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write(uint32_t addr, const void *data, size_t sz)
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{
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addr = addr - VIDEO_BASE_ADDR;
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memcpy(((uint8_t *)memory) + addr, data, sz);
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return (sz);
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}
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struct bus video_memory = {
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"video-memory",
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{VIDEO_BASE_ADDR, VIDEO_BASE_ADDR + (320 * 200 * sizeof(uint16_t))},
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&read,
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&write,
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};
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