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Complete redesign of the CBM610 support.

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Use wrappers to call the kernal in bank 15 instead of implementing kernal
functionality within the cc65 libs (eats performance but is much smaller and
simpler).
Improved startup/shutdown code allows a return to the system bank without
calling the BASIC cold start vector.


git-svn-id: svn://svn.cc65.org/cc65/trunk@2793 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2003-12-20 23:13:26 +00:00
parent 018a68a2fe
commit a7042ddbe4
28 changed files with 1086 additions and 1033 deletions
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11
libsrc/cbm610/kreadst.s
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@@ -6,13 +6,20 @@
.export READST
.import sys_bank, restore_bank
.import sysp0: zp, ktmp: zp
.include "cbm610.inc"
.proc READST
lda ST ; Load status
rts ; Return to caller
jsr sys_bank
sty ktmp ; Save Y register
ldy #ST
lda (sysp0),y ; Load ST from system bank
ldy ktmp
jmp restore_bank ; Will set condition codes on A
.endproc