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Don't hardcode the address of the SYS call for the startup code of the

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Commodore machines.


git-svn-id: svn://svn.cc65.org/cc65/trunk@4474 b7a2c559-68d2-44c3-8de9-860c34a00d81
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uz
2009-11-23 12:01:24 +00:00
parent 61b2834508
commit c7a33334ba
6 changed files with 47 additions and 28 deletions
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8
libsrc/c64/crt0.s
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@@ -25,14 +25,18 @@
.word Head ; Load address
Head: .word @Next
.word .version ; Line number
.byte $9E,"2061" ; SYS 2061
.byte $9E ; SYS token
.byte <(((Start / 1000) .mod 10) + $30)
.byte <(((Start / 100) .mod 10) + $30)
.byte <(((Start / 10) .mod 10) + $30)
.byte <(((Start / 1) .mod 10) + $30)
.byte $00 ; End of BASIC line
@Next: .word 0 ; BASIC end marker
; ------------------------------------------------------------------------
; Actual code
ldx #zpspace-1
Start: ldx #zpspace-1
L1: lda sp,x
sta zpsave,x ; Save the zero page locations we need
dex