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adapted to Kick Assembler, some documentation update

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FeralChild64 committed 2019-09-07 12:35:21 +02:00
1 parent ae23dbae7b
commit de27124b4f
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c64/kernal/iec/iec_pull_clk_release_data.s
+5 -5
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@@ -1,13 +1,13 @@
iec_pull_clk_release_data:
;; Pulled CLK = DATA considered invalid; for extra robustness on non-emulated
;; hardware give some lines few more cycles to stabilize; see page 10 of
;; http://www.zimmers.net/anonftp/pub/cbm/programming/serial-bus.pdf
// Pulled CLK = DATA considered invalid; for extra robustness on non-emulated
// hardware give some lines few more cycles to stabilize; see page 10 of
// http://www.zimmers.net/anonftp/pub/cbm/programming/serial-bus.pdf
lda CIA2_PRA
ora #BIT_CIA2_PRA_CLK_OUT ; pull
ora #BIT_CIA2_PRA_CLK_OUT // pull
sta CIA2_PRA
and #$FF - BIT_CIA2_PRA_DAT_OUT ; release
and #$FF - BIT_CIA2_PRA_DAT_OUT // release
sta CIA2_PRA
rts