6502/erc-c
1
0
Fork 0
mirror of https://github.com/pevans/erc-c.git synced 2024-10-31 13:07:14 +00:00
Code Issues Projects Releases Wiki Activity

Use A & oper here

Browse Source
This commit is contained in:
Peter Evans 2018-01-21 12:47:58 -06:00
parent f9a95827f5
commit 1334e34e76
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
src/mos6502.bits.c
View File

@ -54,7 +54,7 @@ DEFINE_INST(bit)
// We're just relying on the modify_status function to do negative // We're just relying on the modify_status function to do negative
// and zero; we also need to do overflow, but overflow is checked in // and zero; we also need to do overflow, but overflow is checked in
// a slightly different way with BIT... // a slightly different way with BIT...
mos6502_modify_status(cpu, MOS_NZ, oper, oper); mos6502_modify_status(cpu, MOS_NZ, oper, cpu->A & oper);
// Normally, overflow is handled by checking if bit 7 flipped from 0 // Normally, overflow is handled by checking if bit 7 flipped from 0
// to 1 or vice versa, and that's done by comparing the result to // to 1 or vice versa, and that's done by comparing the result to