Mercurial > repos > blastem

comparison vdp.c @ 461:6221f8f534fa

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Merge
author Mike Pavone <pavone@retrodev.com>
date Tue, 10 Sep 2013 00:30:39 -0700
parents 788ba843a731 c49ecf575784
children 5677c053edd6
comparison
equal deleted inserted replaced
460:788ba843a731 461:6221f8f534fa
1519 if ((context->regs[REG_MODE_4] & BIT_INTERLACE) && context->framebuf == context->oddbuf) { 1519 if ((context->regs[REG_MODE_4] & BIT_INTERLACE) && context->framebuf == context->oddbuf) {
1520 value |= 0x10; 1520 value |= 0x10;
1521 } 1521 }
1522 uint32_t line= context->cycles / MCLKS_LINE; 1522 uint32_t line= context->cycles / MCLKS_LINE;
1523 uint32_t linecyc = context->cycles % MCLKS_LINE; 1523 uint32_t linecyc = context->cycles % MCLKS_LINE;
1524 if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE) || context->cycles < (context->latched_mode & BIT_H40 ? 16*4 : 16*5)) { 1524 if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE)) {
1525 value |= 0x8; 1525 value |= 0x8;
1526 } 1526 }
1527 if (linecyc < (context->latched_mode & BIT_H40 ? HBLANK_CLEAR_H40 : HBLANK_CLEAR_H32)) { 1527 if (linecyc < (context->latched_mode & BIT_H40 ? HBLANK_CLEAR_H40 : HBLANK_CLEAR_H32)) {
1528 value |= 0x4; 1528 value |= 0x4;
1529 } 1529 }
1531 value |= 0x2; 1531 value |= 0x2;
1532 } 1532 }
1533 if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify 1533 if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify
1534 value |= 0x1; 1534 value |= 0x1;
1535 } 1535 }
1536 //printf("status read at cycle %d returned %X\n", context->cycles, value);
1536 //TODO: Sprite overflow, sprite collision, odd frame flag 1537 //TODO: Sprite overflow, sprite collision, odd frame flag
1537 return value; 1538 return value;
1538 } 1539 }
1539 1540
1540 uint16_t vdp_data_port_read(vdp_context * context) 1541 uint16_t vdp_data_port_read(vdp_context * context)