General Information
Author: Carsten Strotmann
Assembler: Bibo Assembler
Published: 08.07.91
00010			 .LI OFF
00020 ******************************
00030 *                            *
00040 * PROGRAMM:BOOT PROGRAMM LOAD*
00050 * AUTOR	:CARSTEN STROTMANN *
00060 * DATUM	:08.07.91	   *
00070 * VERSION :01                *
00080 * FUER	 :PSC              *
00090 *	                           *
00100 ******************************
00110 ;
00120 BOTSEC	=	4
00130 BOOT	=	$9
00140 DOSVEC	=	$A
00150 DOSINI	=	$C
00160 RTCLOK	=	$12
00170 SDLSTL	=	$230
00180 COLOR0	=	$2C4
00190 COLOR1	=	$2C5
00200 COLOR2	=	$2C6
00210 COLOR3	=	$2C7
00220 COLOR4	=	$2C8
00230 DDEVIC	=	$300
00240 DUNIT	=	$301
00250 DCMND	=	$302
00260 DSTAT	=	$303
00270 DBUF	=	$304
00280 DTIMLO	=	$306
00290 DUBUSE	=	$307
00300 DBYT	=	$308
00310 DAUX	=	$30A
00320 ;
00330 PORTB	=	$D301
00340 SIOV	=	$E459
00350 ;
00360			 .OR $9C00
00370			 .TA $4000
00380 ;
00390 ------------------------------
00400 ;
00410 DSKBOOT
00420			 .HX 00
00430			 .DA #BOTSEC
00440			 .DA DSKBOOT
00450			 .DA INIT
00460 ;
00470 BOTCON
00480			 CLC
00490			 RTS
00500 ------------------------------
00510 PRGADR	.DA $0F80
00520 FIRSEC	.DA $0006
00530 CNTSEC	.DA $00FF
00540 PRGJMP	.DA $8844
00550 ------------------------------
00560 DL		 .HX 707070707070707070
00570			 .HX 42
00580 TXTADR	.DA TXT
00590			 .HX 60066002000200020002
00600			 .HX 41
00610			 .DA DL
00620 ------------------------------
00630 TXT		.AT " NOW LOADING...	                      "
00640		        .AT "		my programm		      "
00650			.AT "	 (c) my company		              "
00660			.AT "  Diskversion 2003 by my other company   "
00670			.AT "---------------------------------------- "
00680			.AT "			Sectors to load :     "
00690 CNT		.AT "255                                      "
00700 ------------------------------
00710 INIT
00720 ;		  LDA #START
00730 ;		  STA DOSVEC
00740 ;		  LDA /START
00750 ;		  STA DOSVEC+1
00760 ;		  RTS
00770 ;
00780 START
00790			 LDA PORTB
00800			 ORA #1
00810			 STA PORTB
00820 ;
00830			 LDA #DL
00840			 STA SDLSTL
00850			 LDA /DL
00860			 STA SDLSTL+1
00870 ;
00880			 LDA #0
00890			 STA COLOR4
00900			 LDA #4
00910			 STA COLOR2
00920			 LDA #10
00930			 STA COLOR1
00940			 LDA #90
00950			 STA COLOR0
00960 ;
00970 WAITVBI
00980			 LDA RTCLOK+2
00990 .1		 CMP RTCLOK+2
01000			 BEQ .1
01010 ;
01020			 LDA #$31
01030			 STA DDEVIC
01040			 LDA #$01
01050			 STA DUNIT
01060			 LDA #$52
01070			 STA DCMND
01080			 LDA #7
01090			 STA DTIMLO
01100			 LDA #$80
01110			 STA DBYT
01120			 LDA #0
01130			 STA DUBUSE
01140			 STA DBYT+1
01150			 LDA PRGADR
01160			 STA DBUF
01170			 LDA PRGADR+1
01180			 STA DBUF+1
01190 ;
01200			 LDA FIRSEC
01210			 STA DAUX
01220			 LDA FIRSEC+1
01230			 STA DAUX+1
01240 ;
01250 SIOJMP	LDA #$40
01260			 STA DSTAT
01270			 JSR SIOV
01280 ;
01290 INCADR	LDA DBUF
01300			 CLC
01310			 ADC #$80
01320			 STA DBUF
01330			 BCC INCSEC
01340			 INC DBUF+1
01350 INCSEC
01360			 INC DAUX
01370			 LDA DAUX
01380			 BNE DECTXT
01390			 INC DAUX+1
01400 ;
01410 DECTXT
01420			 DEC CNT+2
01430			 LDA CNT+2
01440			 CMP #$0F
01450			 BNE .1
01460			 LDA #$19
01470			 STA CNT+2
01480			 DEC CNT+1
01490 .1
01500			 LDA CNT+1
01510			 CMP #$0F
01520			 BNE .2
01530			 LDA #$19
01540			 STA CNT+1
01550			 DEC CNT
01560 .2
01570			 NOP
01580 DECCNT
01590			 DEC CNTSEC
01600			 LDA CNTSEC
01610			 BNE NEWSEC
01620			 DEC CNTSEC+1
01630 NEWSEC
01640			 LDA CNTSEC+1
01650			 BPL SIOJMP
01660 ;
01670			 LDA PRGJMP+1
01680			 PHA
01690			 LDA PRGJMP
01700			 PHA
01710			 RTS
01720 ------------------------------

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« This page (revision-1) was last changed on 20-Feb-2010 21:44 by Carsten Strotmann