H-DMA fix

2001-09-18 02:25:44 +00:00
parent 5de9f145a1
commit a60960757d
2 changed files with 18 additions and 1 deletions
--- a/zsnes/src/cpu/dma.asm
+++ b/zsnes/src/cpu/dma.asm
@@ -23,7 +23,7 @@ EXTSYM memtablew8,regptr
 EXTSYM dmadata
 EXTSYM hdmatype
 EXTSYM nexthdma
-EXTSYM curhdma,curypos,hdmadata,hdmadelay,hdmaearlstart
+EXTSYM curhdma,curypos,hdmadata,hdmadelay,hdmaearlstart,nohdmaoff
 EXTSYM resolutn
 EXTSYM memtabler16

@@ -856,6 +856,10 @@ NEWSYM reg420Cw
    pop ebx
 ;    call exechdma
 ;    call exechdma
+    cmp byte[hdmaearlstart],2
+    je .nohdma
+    cmp byte[nohdmaoff],1
+    je .nohdma
    mov byte[hdmaoff],1
 .nohdma
    mov byte[hdmarestart],0