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Move zp space out of crt0.s

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1291 b7a2c559-68d2-44c3-8de9-860c34a00d81
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cuz
2002-05-26 09:09:10 +00:00
parent 3aadd7f62b
commit 33c1e82bda
7 changed files with 20 additions and 174 deletions
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26
libsrc/c128/crt0.s
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@@ -12,6 +12,7 @@
.import __IRQFUNC_TABLE__, __IRQFUNC_COUNT__
.import __RAM_START__, __RAM_SIZE__
.include "zeropage.inc"
.include "c128.inc"
.include "../cbm/cbm.inc"
@@ -21,31 +22,6 @@
IRQInd = $2FD ; JMP $0000 - used as indirect IRQ vector
; ------------------------------------------------------------------------
; Define and export the ZP variables for the C64 runtime
.exportzp sp, sreg, regsave
.exportzp ptr1, ptr2, ptr3, ptr4
.exportzp tmp1, tmp2, tmp3, tmp4
.exportzp regbank, zpspace
.zeropage
zpstart = *
sp: .res 2 ; Stack pointer
sreg: .res 2 ; Secondary register/high 16 bit for longs
regsave: .res 2 ; slot to save/restore (E)AX into
ptr1: .res 2
ptr2: .res 2
ptr3: .res 2
ptr4: .res 2
tmp1: .res 1
tmp2: .res 1
tmp3: .res 1
tmp4: .res 1
regbank: .res 6 ; 6 byte register bank
zpspace = * - zpstart ; Zero page space allocated
; Place the startup code in a special segment to cope with the quirks of
; c128 banking. Do also create an empty segment named "NMI" to avoid
; warnings if the rs232 routines are not used.