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| -rw-r--r-- | subx/Readme.md | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/subx/Readme.md b/subx/Readme.md index b6866d9f..b8994563 100644 --- a/subx/Readme.md +++ b/subx/Readme.md @@ -103,10 +103,11 @@ a few registers: * Six general-purpose 32-bit registers: EAX, EBX, ECX, EDX, ESI and EDI * Two additional 32-bit registers: ESP and EBP (I suggest you only use these to manage the call stack.) -* Three 1-bit _flag_ registers for conditional branching: +* Four 1-bit _flag_ registers for conditional branching: - zero/equal flag ZF - sign flag SF - overflow flag OF + - carry flag CF SubX programs consist of instructions like `89/copy`, `01/add`, `3d/compare` and `52/push-ECX` which modify these registers as well as a byte-addressable |