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Merge pull request #52 from philbudne/master

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s7.s: fix sna/sma confusion that caused hangs in display PI code
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philbudne
2016-03-19 00:53:15 -04:00
parent b9fa7fb4fb 053aedcf95
commit c948eb8012
1 changed files with 3 additions and 3 deletions
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src/sys/s7.s
+3 -3
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@@ -78,7 +78,7 @@ cnop: " fetched as constant in iread
"** BEGIN CROSSED OUT "** BEGIN CROSSED OUT
1: lds " load display status (see 03-scope.pdf pg 25) 1: lds " load display status (see 03-scope.pdf pg 25)
sma ral " edges flag?? sma ral " display trap set? (and rotate left)
jmp 1f " not set jmp 1f " not set
cdf " clear display flags cdf " clear display flags
lac .dspb lac .dspb
@@ -99,11 +99,11 @@ dsprestart:
dac .dsptm " set .dsptm = -10 (10 ticks) dac .dsptm " set .dsptm = -10 (10 ticks)
jmp piret jmp piret
1: sna ral " dataphone flag set (bit 7)?? 1: sma ral " edges flag set?? (and rotate)
jmp .+3 " no jmp .+3 " no
raef " "resume after edges flag" raef " "resume after edges flag"
jmp piret " return jmp piret " return
sma " light pen flags (bit 2) sma " light pen flag?
jmp 1f " no jmp 1f " no
lda " G-2: load display address lda " G-2: load display address
dac .lpba " save dac .lpba " save