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Remove unused code, port to new version

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git-svn-id: svn://svn.cc65.org/cc65/trunk@1377 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz
2002-08-07 19:28:23 +00:00
parent f0d89e09bc
commit 8a4378e60c
1 changed files with 2 additions and 36 deletions
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38
libsrc/vic20/crt0.s
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@@ -10,35 +10,10 @@
.import _main .import _main
.import __RAM_START__, __RAM_SIZE__ ; Linker generated .import __RAM_START__, __RAM_SIZE__ ; Linker generated
.include "zeropage.inc"
.include "vic20.inc" .include "vic20.inc"
.include "../cbm/cbm.inc" .include "../cbm/cbm.inc"
; ------------------------------------------------------------------------
; Define and export the ZP variables for the Vic20 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 4 ; 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
.code .code
; ------------------------------------------------------------------------ ; ------------------------------------------------------------------------
@@ -48,7 +23,7 @@ zpspace = * - zpstart ; Zero page space allocated
.word Head ; Load address .word Head ; Load address
Head: .word @Next Head: .word @Next
.word 1000 ; Line number .word 1000 ; Line number
.byte $9E,"4109" ; SYS 2061 .byte $9E,"4109" ; SYS 4109
.byte $00 ; End of BASIC line .byte $00 ; End of BASIC line
@Next: .word 0 ; BASIC end marker @Next: .word 0 ; BASIC end marker
.reloc .reloc
@@ -80,12 +55,6 @@ L1: lda sp,x
tsx tsx
stx spsave ; Save the system stack ptr stx spsave ; Save the system stack ptr
; lda $01
; sta mmusave ; Save the memory configuration
; and #$F8
; ora #$06 ; Enable kernal+I/O, disable basic
; sta $01
lda #<(__RAM_START__ + __RAM_SIZE__) lda #<(__RAM_START__ + __RAM_SIZE__)
sta sp sta sp
lda #>(__RAM_START__ + __RAM_SIZE__) lda #>(__RAM_START__ + __RAM_SIZE__)
@@ -111,8 +80,6 @@ _exit: jsr donelib ; Run module destructors
ldx spsave ldx spsave
txs ; Restore stack pointer txs ; Restore stack pointer
; lda mmusave
; sta $01 ; Restore memory configuration
; Copy back the zero page stuff ; Copy back the zero page stuff
@@ -134,4 +101,3 @@ zpsave: .res zpspace
.bss .bss
spsave: .res 1 spsave: .res 1
mmusave:.res 1