6502/65816.js
1
0
Fork 0
mirror of https://github.com/pskupinski/65816.js.git synced 2024-06-20 11:29:27 +00:00
Code Issues Projects Releases Wiki Activity

added ADC direct page indexed x, ADC absolute indexed x, ADC absolute indexed y

Browse Source
This commit is contained in:
Preston Skupinski 2011-05-07 15:16:37 -04:00
parent 47766a6b0d
commit 9254648308
1 changed files with 31 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
cpu.js
View File

@ -81,7 +81,10 @@ function CPU_65816() {
0xf0 : BEQ, 0xd0 : BNE, 0x90 : BCC, 0xb0 : BCS,
0x50 : BVC, 0x70 : BVS, 0x10 : BPL, 0x30 : BMI,
0x69 : ADC_const, 0x6d : ADC_absolute,
0x65 : ADC_direct_page, 0x72 : ADC_direct_page_indirect };
0x65 : ADC_direct_page, 0x72 : ADC_direct_page_indirect,
0x7d : ADC_absolute_indexed_x,
0x79 : ADC_absolute_indexed_y,
0x75 : ADC_direct_page_indexed_x };
}
var MMU = {
@ -230,6 +233,33 @@ var ADC_direct_page_indirect = {
}
};
ADC_absolute_indexed_x = {
bytes_required:function() {
return 3;
},
execute:function(cpu, bytes) {
ADC_absolute.execute(cpu, ((bytes[1]<<8)|bytes[0])+cpu.r.x);
}
};
ADC_absolute_indexed_y = {
bytes_required:function() {
return 3;
},
execute:function(cpu, bytes) {
ADC_absolute.execute(cpu, ((bytes[1]<<8)|bytes[0])+cpu.r.y);
}
};
ADC_direct_page_indexed_x = {
bytes_required:function() {
return 2;
},
execute:function(cpu, bytes) {
ADC_direct_page.execute(cpu, bytes[0]+cpu.r.x);
}
};
var BMI = {
bytes_required:function() {
return 2;