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;
; Cassette boot file header
;
; Christian Groessler, chris@groessler.org, 2014
;
;DEBUG = 1
.ifndef __ATARIXL__
.include "atari.inc"
.import __BSS_RUN__, __STARTADDRESS__, _cas_init
.export _cas_hdr
.assert ((__BSS_RUN__ - __STARTADDRESS__ + 127) / 128) < $101, error, "File to big to load from cassette"
; for a description of the cassette header, see De Re Atari, appendix C
.segment "CASHDR"
_cas_hdr:
.byte 0 ; ignored
.byte <((__BSS_RUN__ - __STARTADDRESS__ + 127) / 128) ; # of 128-byte records to read
.word __STARTADDRESS__ ; load address
.word _cas_init ; init address
.ifdef DEBUG
lda #33
ldy #80
sta (SAVMSC),y
.endif
clc
rts
.endif ; .ifdef __ATARIXL__
|
