thequux/jdp11
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Fixed a misunderstanding of autoincrement/autodecrement mode; now EKBB prints its header message

Browse Source
This commit is contained in:
TQ Hirsch
2023-09-26 23:54:53 +02:00
parent b8b356b8b3
commit 62e6987919
1 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
src/main/kotlin/com/thequux/mcpdp/core/CPU.kt
View File

@@ -731,7 +731,7 @@ class CPU(val mbus: MemBus, val tracer: ITracer = NullTracer()) {
val mode = operand shr 3 val mode = operand shr 3
val reg = operand and 0x7 val reg = operand and 0x7
val is_pc = reg == 7 val is_pc = reg == 7
val increment = if (byte_mode && !is_pc) 1U else 2U val increment = if (byte_mode && reg < 6) 1U else 2U
val decoded = 0x80_FFFFu and when (mode and 0x7) { val decoded = 0x80_FFFFu and when (mode and 0x7) {
0 -> reg.toUInt() bis PADDR_REG_BIT 0 -> reg.toUInt() bis PADDR_REG_BIT
1 -> registers[reg].toUInt() 1 -> registers[reg].toUInt()