Fixed f32a 'minus if' description

ryukzak · Mar 5, 2025 · f87926a · f87926a
1 parent 0bcbc85
commit f87926a
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diff --git a/docs/f32a.md b/docs/f32a.md
@@ -188,8 +188,8 @@ Most of the instructions drop the carry flag. Exceptions: `add`, `dup`.
 
 - **Minus If**
     - **Syntax:** `-if <label>`
-    - **Description:** Jump to the specified label if the top value of the data stack is negative.
-    - **Operation:** `if dataStack.pop() < 0 then p <- <label>`
+    - **Description:** Jump to the specified label if the top value of the data stack is nonnegative.
+    - **Operation:** `if dataStack.pop() >= 0 then p <- <label>`
 
 - **Halt**
     - **Syntax:** `halt`

diff --git a/src/Isa/F32a.hs b/src/Isa/F32a.hs
@@ -33,7 +33,7 @@ data Isa w l
       Jump l
     | -- | __if__   If T is nonzero, continues with the next instruction word addressed by P. If T is zero, jumps
       If l
-    | -- | __-if__  Minus-if. If T is negative (T17 set), continues with the next instruction word addressed by P. If T is positive, jumps
+    | -- | __-if__  Minus-if. If T is negative (T[31] set), continues with the next instruction word addressed by P. If T is nonnegative, jumps
       MinusIf l
     | -- | __a!__   A-Store. Stores T into register A, popping the data stack
       AStore