folkert/KEK
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

clarified BGE/BLE/BGT (in conditional_branch_instructions)

Browse source
This commit is contained in:
folkert van heusden 2022-03-20 18:17:50 +01:00
parent 70be182836
commit daa940986f
1 changed files with 3 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

6
cpu.cpp
View file

@ -896,7 +896,7 @@ bool cpu::conditional_branch_instructions(const uint16_t instr)
break;
case 0b00000100: // BGE
take = (getPSW_n() ^ getPSW_v()) == false;
take = getPSW_n() == getPSW_v();
break;
case 0b00000101: // BLT
@ -904,11 +904,11 @@ bool cpu::conditional_branch_instructions(const uint16_t instr)
break;
case 0b00000110: // BGT
take = ((getPSW_n() ^ getPSW_v()) | getPSW_z()) == false;
take = getPSW_n() == getPSW_v() && getPSW_z() == false;
break;
case 0b00000111: // BLE
take = (getPSW_n() ^ getPSW_v()) | getPSW_z();
take = getPSW_n() != getPSW_v() | getPSW_z();
break;
case 0b10000000: // BPL