Minor math optimizations

2019-02-28 17:30:34 +01:00
parent 0ea78be056
commit cc6559c3f6
4 changed files with 16 additions and 10 deletions
--- a/libsrc/runtime/umul16x16r32.s
+++ b/libsrc/runtime/umul16x16r32.s
@@ -42,11 +42,11 @@ umul16x16r16m:

        clc
        adc     ptr3
-        pha
+        tax
        lda     ptr3+1
        adc     sreg+1
        sta     sreg+1
-        pla
+        txa

@L1:    ror     sreg+1
        ror     a