Added comments that explain why some instructions are implied.

2014-05-05 13:45:34 -04:00
parent 7d512ca238
commit a27e7562fd
4 changed files with 7 additions and 7 deletions
--- a/libsrc/c128/mou/c128-pot.s
+++ b/libsrc/c128/mou/c128-pot.s
@@ -209,7 +209,7 @@ UNINSTALL:
        sei
        sta     IRQInd+1
        stx     IRQInd+2
-        ;cli
+        ;cli                            ; This will be done at end of HIDE

        jsr     HIDE                    ; Hide cursor on exit
        lda     INIT_save
@@ -318,8 +318,8 @@ BUTTONS:
        and     #JOY::LEFT | JOY::RIGHT
        lsr     a
        lsr     a
-        ;clc
-        adc     #%00001110
+        ;clc                            ; ("lsr" shifted zero into carry flag)
+        adc     #%00001110              ; Shift bit 1 over to bit 4
        and     #MOUSE_BTN_LEFT | MOUSE_BTN_RIGHT
        rts