1
0
mirror of https://github.com/cc65/cc65.git synced 2024-12-25 02:29:52 +00:00
cc65/libsrc/lynx/cartread.s
cuz d0bee35728 Move constructor code into the INIT segment
git-svn-id: svn://svn.cc65.org/cc65/trunk@3405 b7a2c559-68d2-44c3-8de9-860c34a00d81
2005-02-26 09:28:46 +00:00

50 lines
1.1 KiB
ArmAsm

; ***
; CC65 Lynx Library
;
; Originally by Bastian Schick
; http://www.geocities.com/SiliconValley/Byte/4242/lynx/
;
; Ported to cc65 (http://www.cc65.org) by
; Shawn Jefferson, June 2004
;
; ***
;
; void __fastcall__ read_cart_block(unsigned char block, char *dest)
;
; Reads an entire block (1024 bytes) from the cartridge into the buffer
; pointed to by dest.
.export _read_cart_block
.import FileSelectBlock, FileReadBytes
.import popa
.include "extzp.inc"
.code
;*******************************************
; void read_cart_block (unsigned char block, char *dest);
; loads one Block (1024 bytes) to pDest
_read_cart_block:
sta _FileDestPtr ; lo
stx _FileDestPtr+1 ; hi
jsr popa ; bBlock
sta _FileCurrBlock
jsr FileSelectBlock ; select block# (Accu)
lda #<1024 ; load a whole block (1024 bytes)
eor #$ff
tax
lda #>1024
eor #$ff
tay
jmp FileReadBytes