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43 lines
768 B
C
43 lines
768 B
C
/* putc.c 11/21/2012 dwg - output a test character to the TMS9918 */
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#include <stdio.h>
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#include <stdlib.h>
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#include <diagnose.h>
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#include <n8chars.h>
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#include <memory.h>
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copyup()
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{
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unsigned char * p;
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int ascii;
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int byte;
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p = 0x8000;
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for(ascii=0;ascii<256;ascii++) {
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for(byte=0;byte<8;byte++) {
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*p++ = charset[(ascii*8)+7-byte];
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}
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}
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}
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main()
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{
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int index;
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copyup();
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hregbc = 0x4040;
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hregde = 0;
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hreghl = 0x8000;
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diagnose();
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hregbc = 0x4440;
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hregde = (12<<8)+12;
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diagnose();
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for(index=0;index<600;index++) {
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hregbc = 0x4740;
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hregde = '?';
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diagnose();
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}
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}
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