From: cuz <cuz@b7a2c559-68d2-44c3-8de9-860c34a00d81>
Date: Sun, 11 Aug 2002 15:11:31 +0000 (+0000)
Subject: Prepare VIC20 startup for different start addresses
X-Git-Tag: V2.12.0~2237
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=4b805447b65400960662f8e738fdc449dae8ea8a;p=cc65

Prepare VIC20 startup for different start addresses


git-svn-id: svn://svn.cc65.org/cc65/trunk@1390 b7a2c559-68d2-44c3-8de9-860c34a00d81
---

diff --git a/libsrc/vic20/crt0.s b/libsrc/vic20/crt0.s
index 4a916f948..189a9d71b 100644
--- a/libsrc/vic20/crt0.s
+++ b/libsrc/vic20/crt0.s
@@ -8,29 +8,33 @@
 	.import		initlib, donelib
        	.import	       	zerobss, push0
 	.import	     	_main
-	.import		__RAM_START__, __RAM_SIZE__	; Linker generated
+     	.import		__RAM_START__, __RAM_SIZE__	; Linker generated
 
         .include        "zeropage.inc"
-	.include     	"vic20.inc"
-	.include     	"../cbm/cbm.inc"
-
-.code
+     	.include     	"vic20.inc"
+     	.include     	"../cbm/cbm.inc"
 
 ; ------------------------------------------------------------------------
 ; BASIC header with a SYS call
 
-	.org	$FFF
+.segment        "EXEHDR"
         .word   Head            ; Load address
 Head:   .word   @Next
         .word   1000            ; Line number
-        .byte   $9E,"4109"      ; SYS 4109
+        .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
-	.reloc
+@Start:
 
 ; ------------------------------------------------------------------------
 ; Actual code
 
+.code
+
 	ldx    	#zpspace-1
 L1:	lda	sp,x
    	sta	zpsave,x	; Save the zero page locations we need
diff --git a/src/ld65/cfg/vic20.cfg b/src/ld65/cfg/vic20.cfg
index c1804ad23..dd8ba7b22 100644
--- a/src/ld65/cfg/vic20.cfg
+++ b/src/ld65/cfg/vic20.cfg
@@ -3,6 +3,7 @@ MEMORY {
     RAM: start = $FFF, size = $0E01, define = yes, file = %O;
 }
 SEGMENTS {
+    EXEHDR: load = RAM , type = wprot;
     CODE: load = RAM, type = wprot;
     RODATA: load = RAM, type = wprot;
     DATA: load = RAM, type = rw;