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comparison vdp.c @ 476:5d7bc113653b

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Clear the low 2 bits of CD when a register is written to
author Mike Pavone <pavone@retrodev.com>
date Sun, 15 Sep 2013 23:49:09 -0700
parents 50e0cb475294
children 7fe655d4e2b7
comparison
equal deleted inserted replaced
475:50e0cb475294 476:5d7bc113653b
1487 context->double_res = (value & (BIT_INTERLACE | BIT_DOUBLE_RES)) == (BIT_INTERLACE | BIT_DOUBLE_RES); 1487 context->double_res = (value & (BIT_INTERLACE | BIT_DOUBLE_RES)) == (BIT_INTERLACE | BIT_DOUBLE_RES);
1488 if (!context->double_res) { 1488 if (!context->double_res) {
1489 context->framebuf = context->oddbuf; 1489 context->framebuf = context->oddbuf;
1490 } 1490 }
1491 } 1491 }
1492 context->cd &= 0x3C;
1492 } 1493 }
1493 } else { 1494 } else {
1494 context->flags |= FLAG_PENDING; 1495 context->flags |= FLAG_PENDING;
1495 context->address = (context->address &0xC000) | (value & 0x3FFF); 1496 context->address = (context->address &0xC000) | (value & 0x3FFF);
1496 context->cd = (context->cd &0x3C) | (value >> 14); 1497 context->cd = (context->cd &0x3C) | (value >> 14);