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Squeezed bytes and cycles out of the kbhit functions for almost all platforms.

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git-svn-id: svn://svn.cc65.org/cc65/trunk@4480 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz
2009-11-24 18:31:16 +00:00
parent 7357b44104
commit bfbf94404b
11 changed files with 111 additions and 80 deletions
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9
libsrc/lynx/kbhit.s
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@@ -7,7 +7,7 @@
.export _kbhit
.export KBEDG
.export KBSTL
.import return0, return1
.import return1
; --------------------------------------------------------------------------
; The Atari Lynx has a very small keyboard - only 3 keys
@@ -49,7 +49,8 @@ _kbhit:
sta KBNPR ; inverted previous ones pressed
stx KBPRV
lda KBEDG
beq @L1
beq @L1
jmp return1 ; Key hit
@L1:
jmp return0 ; No new keys hit
@L1: tax ; No new keys hit
rts