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clarify comments

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This commit is contained in:
Jonathan Campbell 2018-02-12 08:35:55 -08:00
parent 3906744ef0
commit f920e89801
1 changed files with 3 additions and 3 deletions
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6
src/hardware/vga_dac.cpp
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@ -130,7 +130,7 @@ void write_p3c7(Bitu port,Bitu val,Bitu iolen) {
vga.dac.hidac_counter=0;
vga.dac.pel_index=0;
vga.dac.state=DAC_READ;
vga.dac.read_index=val; /* NTS: According to Paradise SVGA, read index = x, write index = x + 1 */
vga.dac.read_index=val; /* NTS: Paradise SVGA behavior, read index = x, write index = x + 1 */
vga.dac.write_index=val + 1;
}
@ -144,7 +144,7 @@ void write_p3c8(Bitu port,Bitu val,Bitu iolen) {
vga.dac.hidac_counter=0;
vga.dac.pel_index=0;
vga.dac.state=DAC_WRITE;
vga.dac.write_index=val; /* NTS: According to Paradise SVGA, this affects write index, but not read index */
vga.dac.write_index=val; /* NTS: Paradise SVGA behavior, this affects write index, but not read index */
}
Bitu read_p3c8(Bitu port, Bitu iolen){
@ -187,7 +187,7 @@ void write_p3c9(Bitu port,Bitu val,Bitu iolen) {
}
}
}
vga.dac.read_index=vga.dac.write_index++;
vga.dac.read_index=vga.dac.write_index++; // NTS: Paradise SVGA behavior
vga.dac.pel_index=0;
break;
default: