Improve Cricket! detection on ROM4 //c (#17)

* Improve Cricket! detection on ROM4 //c * Add PHP/PLP
2023-05-15 18:21:31 -07:00 · 2023-05-15 18:21:31 -07:00 · 774889ec2e
parent 5211dc6296
commit 774889ec2e
1 changed files with 4 additions and 0 deletions
--- a/clocks/cricket/cricket.system.s
+++ b/clocks/cricket/cricket.system.s
@ -75,6 +75,8 @@ ssc_not_found:

        ;; Init SSC and try the "Read Cricket ID code" sequence.
 init_ssc:
+        php
+        sei
        lda     COMMAND         ; save status of SSC registers
        sta     saved_command
        lda     CONTROL
@ -113,10 +115,12 @@ digit:  cmp     #HI('0')          ; < '0' ?

 cricket_found:
        jsr     restore_cmd_ctl
+        plp
        jmp     install_driver

 cricket_not_found:
        jsr     restore_cmd_ctl
+        plp
        ;; fall through...

 not_found: