Remove unused code, port to new version

git-svn-id: svn://svn.cc65.org/cc65/trunk@1377 b7a2c559-68d2-44c3-8de9-860c34a00d81

diff --git a/libsrc/vic20/crt0.s b/libsrc/vic20/crt0.s
index 59b03af52ce49fb34df83c342ffa899f01166df7..4a916f948be0f6f7d98be22ef23572e2f941aeec 100644 (file)
--- a/libsrc/vic20/crt0.s
+++ b/libsrc/vic20/crt0.s
@@ -10,35 +10,10 @@
        .import         _main
        .import         __RAM_START__, __RAM_SIZE__     ; Linker generated
 
+        .include        "zeropage.inc"
        .include        "vic20.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
 
 ; ------------------------------------------------------------------------
@@ -48,7 +23,7 @@ zpspace       = * - zpstart           ; Zero page space allocated
         .word   Head            ; Load address
 Head:   .word   @Next
         .word   1000            ; Line number
-        .byte   $9E,"4109"      ; SYS 2061
+        .byte   $9E,"4109"      ; SYS 4109
         .byte   $00             ; End of BASIC line
 @Next:  .word   0               ; BASIC end marker
        .reloc
@@ -80,12 +55,6 @@ L1:  lda     sp,x
                tsx
                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__)
        sta     sp
        lda     #>(__RAM_START__ + __RAM_SIZE__)
@@ -111,8 +80,6 @@ _exit:       jsr     donelib         ; Run module destructors
 
        ldx     spsave
        txs                     ; Restore stack pointer
-;      lda     mmusave
-;      sta     $01             ; Restore memory configuration
 
 ; Copy back the zero page stuff
 
@@ -134,4 +101,3 @@ zpsave:     .res    zpspace
 .bss
 
 spsave:        .res    1
-mmusave:.res   1