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started cleanup of aliases, build system fixes

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FeralChild64 committed 2019-07-18 23:30:12 +02:00
1 parent eb12f33225
commit cf795d5f3c
25 files changed
+410 -355
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c64/kernal/iec_tx_command.s
+4 -4
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@@ -14,8 +14,8 @@ iec_tx_command:
jsr wait1ms
;; Did at least one device respond by pulling DATA?
lda CI2PRA
and #BIT_CI2PRA_DAT_IN ; XXX try to optimize this, move to separate routine
lda CIA2_PRA
and #BIT_CIA2_PRA_DAT_IN ; XXX try to optimize this, move to separate routine
beq +
;; No devices present on the bus, so we can immediately return with device not found
@@ -42,8 +42,8 @@ iec_tx_command:
;; flow here, but http://www.zimmers.net/anonftp/pub/cbm/programming/serial-bus.pdf (page 6)
;; advices to just wait 1ms and check the DATA status
jsr wait1ms
lda CI2PRA
and #BIT_CI2PRA_DAT_IN ; XXX try to optimize this, move to separate routine
lda CIA2_PRA
and #BIT_CIA2_PRA_DAT_IN ; XXX try to optimize this, move to separate routine
beq +
;; XXX possible optimization of the flow above: for many commands it is enough