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update RAMTAS, MEMBOT and MEMTOP based on http://unusedino.de/ec64/technical/project64/mapping_c64.html

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Paul Gardner-Stephen committed 2019-04-19 21:42:05 +09:30
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commit e80df3ff53
3 files changed
+23 -5
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c64/kernal/membot.s
+10 -3
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@@ -1,7 +1,14 @@
; Function defined on pp272-273 of C64 Programmers Reference Guide
membot:
; p287 C64 Programmers reference guide
; For now, we only read it, not allow setting it
LDX #<$0800
LDY #>$0800
;; http://unusedino.de/ec64/technical/project64/mapping_c64.html
bcc membot_set
LDX MEMSTR+0
LDY MEMSTR+1
rts
membot_set:
stx MEMSTR+0
stx MEMSTR+1
rts