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Adjust result to user visible size

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git-svn-id: svn://svn.cc65.org/cc65/trunk@3159 b7a2c559-68d2-44c3-8de9-860c34a00d81
This commit is contained in:
cuz 2004-07-17 12:18:51 +00:00
parent 855a2744ea
commit 8eb898d0d1
1 changed files with 15 additions and 3 deletions
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18
libsrc/common/_heapblocksize.s
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@ -11,6 +11,9 @@
.include "_heap.inc"
.macpack generic
.macpack cpu
;-----------------------------------------------------------------------------
; Code
@ -18,8 +21,7 @@ __heapblocksize:
; Decrement the block pointer so it points to the admin data
sec
sbc #HEAP_ADMIN_SPACE ; Assume it's less than 256
sub #HEAP_ADMIN_SPACE ; Assume it's less than 256
bcs L1
dex
L1: sta ptr1
@ -30,10 +32,20 @@ L1: sta ptr1
ldy #1
lda (ptr1),y
tax
.if (.cpu .bitand CPU_ISET_65SC02)
lda (ptr1)
.else
dey
lda (ptr1),y
.endif
; Adjust it to the user visible size
sub #HEAP_ADMIN_SPACE
bcs L9
dex
; Done
rts
L9: rts