mirror of
https://github.com/deater/dos33fsprogs.git
synced 2025-01-29 21:31:53 +00:00
monkey: add loader
This commit is contained in:
Vince Weaver
parent
532bf7d3af
commit
c1ee40a69b
@ -9,10 +9,12 @@ B2D = ../bmp2dhr/b2d
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all: monkey.dsk
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monkey.dsk: HELLO MONKEY
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monkey.dsk: HELLO LOADER TITLE MONKEY
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cp empty.dsk monkey.dsk
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$(DOS33) -y monkey.dsk SAVE A HELLO
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$(DOS33) -y monkey.dsk BSAVE -a 0x1000 MONKEY
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$(DOS33) -y monkey.dsk BSAVE -a 0x1000 LOADER
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$(DOS33) -y monkey.dsk BSAVE -a 0x2000 TITLE
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$(DOS33) -y monkey.dsk BSAVE -a 0x2000 MONKEY
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###
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@ -21,8 +23,28 @@ HELLO: hello.bas
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####
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###
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LOADER: loader.o
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ld65 -o LOADER loader.o -C ../linker_scripts/apple2_1000.inc
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loader.o: loader.s
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ca65 -o loader.o loader.s -l loader.lst
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###
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TITLE: title.o
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ld65 -o TITLE title.o -C ../linker_scripts/apple2_2000.inc
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title.o: title.s
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ca65 -o title.o title.s -l title.lst
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####
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MONKEY: monkey.o
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ld65 -o MONKEY monkey.o -C ../linker_scripts/apple2_1000.inc
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ld65 -o MONKEY monkey.o -C ../linker_scripts/apple2_2000.inc
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monkey.o: monkey.s zp.inc hardware.inc common_defines.inc \
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graphics/graphics.inc \
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703
monkey/loader.s
Normal file
703
monkey/loader.s
Normal file
@ -0,0 +1,703 @@
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; Loader for MIST
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.include "zp.inc"
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.include "hardware.inc"
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.include "common_defines.inc"
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nibtbl = $300 ; nothing uses the bottom 128 bytes of $300, do they?
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bit2tbl = $380 ; bit2tbl: .res 86 ; = nibtbl+128
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filbuf = $3D6 ; filbuf: .res 4 ; = bit2tbl+86
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; read any file slot 6 version
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; based on FASTLD6 and RTS copyright (c) Peter Ferrie 2011-2013,2018
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; modified to assembled with ca65 -- vmw
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; added code to patch it to run from current disk slot -- vmw
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; WHICH_LOAD = $7E ; thing to load
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; adrlo = $26 ; constant from boot prom
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; adrhi = $27 ; constant from boot prom
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; tmpsec = $3c ; constant from boot prom
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; reqsec = $3d ; constant from boot prom
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; sizelo = $44
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; sizehi = $45
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; secsize = $46
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; namlo = $f8
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; namhi = $f9
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; TEMPY = $fa
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; step = $fd ; state for stepper motor
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; tmptrk = $fe ; temporary copy of current track
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; phase = $ff ; current phase for /seek
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; OUTL = $fe ; for picking filename
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; OUTH = $ff
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dirbuf = $c00
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; note, don't put this immediately below
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; the value being read as destaddr-4
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; is temporarily overwritten during read
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; process
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FILENAME = $280
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;===================================================
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;===================================================
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; START / INIT
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;===================================================
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;===================================================
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loader_start:
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lda #LOAD_TITLE
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sta WHICH_LOAD
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jsr init ; unhook DOS, init nibble table
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;===================================================
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;===================================================
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; SETUP THE FILENAME
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;===================================================
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;===================================================
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which_load_loop:
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; lda WHICH_LOAD
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; update the which-file error message
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; tay
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; lda which_disk,Y
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; sta error_string+19
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lda WHICH_LOAD
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asl
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tay
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lda filenames,Y
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sta OUTL
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lda filenames+1,Y
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sta OUTH
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; lda WHICH_LOAD
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; bne load_other
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;load_intro:
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; lda #<$4000
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; sta entry_smc+1
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; lda #>$4000
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; sta entry_smc+2
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; jmp actual_load
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load_other:
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lda #<$2000
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sta entry_smc+1
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lda #>$2000
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sta entry_smc+2
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actual_load:
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;===================================================
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;===================================================
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; SET UP DOS3.3 FILENAME
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;===================================================
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;===================================================
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load_file_and_execute:
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jsr opendir_filename
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entry_smc:
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jsr $1000 ; jump to common entry point
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; hope they updated the WHICH_LOAD value
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jmp which_load_loop
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;==============================
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; setup filename then open/load
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opendir_filename:
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; clear out the filename with $A0 (space)
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lda #<FILENAME
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sta namlo
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lda #>FILENAME
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sta namhi
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ldy #29
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wipe_filename_loop:
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lda #$A0
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sta (namlo),Y
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dey
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bpl wipe_filename_loop
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ldy #0
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copy_filename_loop:
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lda (OUTL),Y
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beq copy_filename_done
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ora #$80
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sta (namlo),Y
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iny
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bne copy_filename_loop
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copy_filename_done:
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jsr opendir ; open and read entire file into memory
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rts
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filenames:
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.word intro_filename
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.word monkey_filename
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intro_filename:
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.byte "TITLE",0
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monkey_filename:
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.byte "MONKEY",0
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;===================================================
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;===================================================
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; INIT (build nibble table)
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;===================================================
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;===================================================
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;unhook DOS and build nibble table
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init:
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; patch to use current drive
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; locate input paramater list
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jsr $3E3
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; result is in A:Y
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sta $FF
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sty $FE
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ldy #1
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lda ($FE),y
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; list+1 should have slot<<8
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ora #$80 ; add in $80
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; c0e0
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sta mlsmc06+1
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; c0e8
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clc
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adc #8
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sta mlsmc02+1
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sta mlsmc07+1
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; c0e9
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clc
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adc #1
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sta mlsmc01+1
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; c0ec
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clc
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adc #3
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sta mlsmc03+1
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sta mlsmc04+1
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sta mlsmc05+1
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jsr $fe93 ; clear COUT
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jsr $fe89 ; clear KEYIN
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;========================
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; Create nibble table
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; Note: the table starts 16 bytes in, and is sparse
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; so it doesn't entirely look like the DOS33 table at
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ldy #0
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ldx #3
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L1: stx $3c ; store tempx (3?)
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txa ; a=x (a=3)
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asl ; a*=2 (a=6)
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bit $3c ; a&tempx, set N/V (a=6)
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beq L3 ; if 0, skip to L3
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ora $3c ; a|=tempx (a=7)
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eor #$ff ; a=~a (a=f8)
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and #$7e ; a&=0x7e 0111 1110 (a=78)
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L2: bcs L3 ; this set way back at asl??
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lsr ; a>>1 a=3c c=0
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; a=1e c=0
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; a=0f c=0
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; a=07 c=1
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bne L2 ; if a!=0 goto l2
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tya ; if a==0, a=y
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sta nibtbl, x ; write out to table
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iny ; increment y
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L3: inx ; increment x x=4, a=0f
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bpl L1 ; loop while high bit not set
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rts
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;===================================================
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;===================================================
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; file not found
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;===================================================
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;===================================================
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file_not_found:
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mlsmc07:lda $c0e8 ; turn off drive motor?
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jsr TEXT
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jsr HOME
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ldy #0
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lda #<error_string
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sta OUTL
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lda #>error_string
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sta OUTH
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quick_print:
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lda (OUTL),Y
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beq quick_print_done
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jsr COUT1
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iny
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jmp quick_print
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quick_print_done:
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; rts
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; jsr quick_print
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fnf_keypress:
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lda KEYPRESS
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bpl fnf_keypress
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bit KEYRESET
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jmp which_load_loop
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; offset for disk number is 19
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error_string:
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.byte "PLEASE INSERT DISK 1, PRESS RETURN",0
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;===================================================
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;===================================================
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; OPENDIR: actually load the file
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;===================================================
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;===================================================
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; turn on drive and read volume table of contents
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opendir:
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mlsmc01:lda $c0e9 ; turn slot#6 drive on
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ldx #0
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stx adrlo ; zero out adrlo
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stx secsize ; zero out secsize
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lda #$11 ; a=$11 (VTOC)
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jsr readdirsec
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firstent:
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lda dirbuf+1
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; lock if entry not found
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entry_not_found:
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beq file_not_found
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; read directory sector
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ldx dirbuf+2
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jsr seekread1
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ldy #7 ;number of directory entries in a sector
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ldx #$2b ;offset of filename in directory entry
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nextent:
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tya
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pha ; was **phy**
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txa
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pha ; was **phx**
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ldy #$1d
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; match name backwards (slower but smaller)
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L4:
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lda (namlo), y
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cmp dirbuf, x
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beq foundname
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pla
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; move to next directory in this block, if possible
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clc
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adc #$23
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tax
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pla
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tay ; was **ply**
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dey
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bne nextent
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beq firstent ; was **bra**
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foundname:
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dex
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dey
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bpl L4
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pla
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tay ; was **ply**
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pla
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; read track/sector list
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lda dirbuf-32, y
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ldx dirbuf-31, y
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jsr seekread1
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; read load offset and length info only, initially
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lda #<filbuf
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sta adrlo
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lda #4
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sta secsize
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lda dirbuf+12
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ldx dirbuf+13
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ldy #>filbuf
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jsr seekread
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; reduce load offset by 4, to account for offset and length
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sec
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lda filbuf
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sbc #4
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sta adrlo
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lda filbuf+1
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sbc #0
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sta adrhi
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; save on stack bytes that will be overwritten by extra read
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ldy #3
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L5:
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lda (adrlo), y
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pha
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dey
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bpl L5
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lda adrhi
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pha
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lda adrlo
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pha
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; increase load size by 4, to account for offst and length
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lda filbuf+2
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adc #3
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sta sizelo
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sta secsize
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lda filbuf+3
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adc #0
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sta sizehi
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beq readfirst
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lda #0 ; was **stz secsize**
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sta secsize
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readfirst:
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ldy #$0c
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; read a file sector
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readnext:
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tya
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pha
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lda dirbuf, y ; A = track
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ldx dirbuf+1, y ; x = sector
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jsr seekread1
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pla
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tay
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; if low count is non-zero then we are done
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; (can happen only for partial last block)
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lda secsize
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bne readdone
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; continue if more than $100 bytes left
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dec sizehi
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bne L6
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; set read size to min(length, $100)
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lda sizelo
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beq readdone
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sta secsize
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L6:
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inc adrhi
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iny
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iny
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bne readnext
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; save current address for after t/s read
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lda adrhi
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pha
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lda adrlo
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pha
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lda #0
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sta adrlo ; was **stz adrlo**
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; read next track/sector sector
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lda dirbuf+1
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ldx dirbuf+2
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jsr readdirsec
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clc
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; restore current address
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readdone:
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pla
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sta adrlo ; code originally had this backwards
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pla
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sta adrhi
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bcc readfirst
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mlsmc02:lda $c0e8
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; restore from stack bytes that were overwritten by extra read
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ldx #3
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ldy #0
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L7:
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pla
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sta (adrlo), y
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iny
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dex
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bpl L7
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rts
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;======================
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; readdirsec
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;======================
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; a = track?
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; x = sector?
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readdirsec:
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ldy #>dirbuf
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seekread:
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sty adrhi
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seekread1:
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sta phase
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lda sectbl, x
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sta reqsec
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jsr readadr
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; if track does not match, then seek
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cpx phase
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beq checksec
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jsr seek
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;=========================================
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; re merge in with qkumba's recent changes
|
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; to fix seek problem?
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;=========================================
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; [re-]read sector
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re_read_addr:
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jsr readadr
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checksec:
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cmp reqsec
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bne re_read_addr
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;=========================
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; read sector data
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;=========================
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readdata:
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jsr readd5aa
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eor #$ad ; zero A if match
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bne re_read_addr
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L12:
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mlsmc03:ldx $c0ec ; read until valid data (high bit set)
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bpl L12
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eor nibtbl-$80, x
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sta bit2tbl-$aa, y
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iny
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bne L12
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L13:
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mlsmc04:ldx $c0ec ; read until valid data (high bit set)
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bpl L13
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eor nibtbl-$80, x
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sta (adrlo), y ; the real address
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iny
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cpy secsize
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bne L13
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ldy #0
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L14:
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ldx #$a9
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L15:
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inx
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beq L14
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lda (adrlo), y
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lsr bit2tbl-$aa, x
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||||
rol
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||||
lsr bit2tbl-$aa, x
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||||
rol
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||||
sta (adrlo), y
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iny
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cpy secsize
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||||
bne L15
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rts
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; no tricks here, just the regular stuff
|
||||
|
||||
;=======================
|
||||
; readaddr -- read the address field
|
||||
;=======================
|
||||
; Find address field, put track in cutrk, sector in tmpsec
|
||||
|
||||
readadr:
|
||||
jsr readd5aa
|
||||
cmp #$96
|
||||
bne readadr
|
||||
ldy #3 ; three?
|
||||
; first read volume/volume
|
||||
; then track/track
|
||||
; then sector/sector?
|
||||
adr_read_two_bytes:
|
||||
tax
|
||||
jsr readnib
|
||||
rol
|
||||
sta tmpsec
|
||||
jsr readnib
|
||||
and tmpsec
|
||||
dey
|
||||
bne adr_read_two_bytes
|
||||
rts
|
||||
|
||||
;========================
|
||||
; make sure we see the $D5 $AA pattern
|
||||
|
||||
readd5aa:
|
||||
L16:
|
||||
jsr readnib
|
||||
L17:
|
||||
cmp #$d5
|
||||
bne L16
|
||||
jsr readnib
|
||||
cmp #$aa
|
||||
bne L17
|
||||
tay ; we need Y=#$AA later
|
||||
|
||||
readnib:
|
||||
mlsmc05:lda $c0ec ; read until valid (high bit set)
|
||||
bpl readnib
|
||||
|
||||
seekret:
|
||||
rts
|
||||
|
||||
;=====================
|
||||
; SEEK
|
||||
;=====================
|
||||
; current track in X?
|
||||
; desired track in phase
|
||||
|
||||
seek:
|
||||
ldy #0
|
||||
sty step
|
||||
asl phase ; multiply by two
|
||||
txa ; current track?
|
||||
asl ; mul by two
|
||||
copy_cur:
|
||||
tax
|
||||
sta tmptrk
|
||||
sec
|
||||
sbc phase
|
||||
beq L22
|
||||
bcs L18
|
||||
eor #$ff
|
||||
inx
|
||||
bcc L19
|
||||
L18:
|
||||
sbc #1
|
||||
dex
|
||||
L19:
|
||||
cmp step
|
||||
bcc L20
|
||||
lda step
|
||||
L20:
|
||||
cmp #8
|
||||
bcs L21
|
||||
tay
|
||||
sec
|
||||
L21:
|
||||
txa
|
||||
pha
|
||||
ldx step1, y
|
||||
L22:
|
||||
php
|
||||
bne L24
|
||||
L23:
|
||||
clc
|
||||
lda tmptrk
|
||||
ldx step2, y
|
||||
L24:
|
||||
stx tmpsec
|
||||
and #3
|
||||
rol
|
||||
tax
|
||||
lsr
|
||||
mlsmc06:lda $c0e0, x
|
||||
L25:
|
||||
ldx #$12
|
||||
L26:
|
||||
dex
|
||||
bpl L26
|
||||
dec tmpsec
|
||||
bne L25
|
||||
bcs L23
|
||||
plp
|
||||
beq seekret
|
||||
pla
|
||||
inc step
|
||||
bne copy_cur
|
||||
|
||||
|
||||
|
||||
step1: .byte $01, $30, $28, $24, $20, $1e, $1d, $1c
|
||||
step2: .byte $70, $2c, $26, $22, $1f, $1e, $1d, $1c
|
||||
|
||||
sectbl: .byte $00,$0d,$0b,$09,$07,$05,$03,$01,$0e,$0c,$0a,$08,$06,$04,$02,$0f
|
||||
|
||||
|
||||
; From $BA96 of DOS33
|
||||
;nibtbl: .res 128 ; = *
|
||||
; .byte $00,$01,$98,$99,$02,$03,$9C,$04 ; $BA96 ; 00
|
||||
; .byte $05,$06,$A0,$A1,$A2,$A4,$A4,$A5 ; $BA9E ; 08
|
||||
; .byte $07,$08,$A8,$A9,$AA,$09,$0A,$0B ; $BAA6 ; 10
|
||||
; .byte $0C,$0D,$B0,$B1,$0E,$0F,$10,$11 ; $BAAE ; 18
|
||||
; .byte $12,$13,$B8,$14,$15,$16,$17,$18 ; $BAB6 ; 20
|
||||
; .byte $19,$1A,$C0,$C1,$C2,$C3,$C4,$C5 ; $BABE ; 28
|
||||
; .byte $C6,$C7,$C8,$C9,$CA,$1B,$CC,$1C ; $BAC6 ; 30
|
||||
; .byte $1D,$1E,$D0,$D1,$D2,$1E,$D4,$D5 ; $BACE ; 38
|
||||
; .byte $20,$21,$D8,$22,$23,$24,$25,$26 ; $BAD6 ; 40
|
||||
; .byte $27,$28,$E0,$E1,$E2,$E3,$E4,$29 ; $BADE ; 48
|
||||
; .byte $2A,$2B,$E8,$2C,$2D,$2E,$2F,$30 ; $BAE6 ; 50
|
||||
; .byte $31,$32,$F0,$F1,$33,$34,$35,$36 ; $BAEE ; 58
|
||||
; .byte $37,$38,$F8,$39,$3A,$3B,$3C,$3D ; $BAF6 ; 60
|
||||
; .byte $3E,$3F,$13,$00,$01,$02,$01,$00 ; $BAFE ; 68
|
||||
; .byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
; .byte $00,$00,$00,$00,$00,$00,$00,$00
|
||||
|
||||
|
||||
;bit2tbl: .res 86 ; = nibtbl+128
|
||||
;filbuf: .res 4 ; = bit2tbl+86
|
||||
;dataend = filbuf+4
|
||||
|
||||
|
||||
loader_end:
|
||||
|
||||
.assert (<loader_end - <loader_start)>16, error, "loader too big"
|
||||
110
monkey/title.s
Normal file
110
monkey/title.s
Normal file
@ -0,0 +1,110 @@
|
||||
; Monkey Title
|
||||
|
||||
; by deater (Vince Weaver) <vince@deater.net>
|
||||
|
||||
; Zero Page
|
||||
.include "zp.inc"
|
||||
.include "hardware.inc"
|
||||
.include "common_defines.inc"
|
||||
|
||||
title_start:
|
||||
;===================
|
||||
; init screen
|
||||
jsr TEXT
|
||||
jsr HOME
|
||||
bit KEYRESET
|
||||
|
||||
bit SET_GR
|
||||
bit PAGE0
|
||||
bit LORES
|
||||
bit TEXTGR
|
||||
|
||||
lda #0
|
||||
sta ANIMATE_FRAME
|
||||
sta FRAMEL
|
||||
sta FRAMEH
|
||||
|
||||
title_loop:
|
||||
|
||||
;====================================
|
||||
; load LF logo
|
||||
;====================================
|
||||
|
||||
jsr gr_copy_to_current
|
||||
|
||||
logo_loop:
|
||||
|
||||
; lda GUYBRUSH_X
|
||||
; sta XPOS
|
||||
; lda GUYBRUSH_Y
|
||||
; sta YPOS
|
||||
|
||||
; lda #<guybrush_back_sprite
|
||||
; sta INL
|
||||
; lda #>guybrush_back_sprite
|
||||
; sta INH
|
||||
|
||||
; jsr put_sprite_crop
|
||||
|
||||
|
||||
; jsr page_flip
|
||||
|
||||
|
||||
|
||||
;====================================
|
||||
; inc frame count
|
||||
;====================================
|
||||
|
||||
inc FRAMEL
|
||||
bne room_frame_no_oflo
|
||||
inc FRAMEH
|
||||
room_frame_no_oflo:
|
||||
|
||||
|
||||
jsr wait_until_keypressed
|
||||
|
||||
|
||||
;==========================
|
||||
; load main program
|
||||
;==========================
|
||||
|
||||
lda #LOAD_MONKEY
|
||||
sta WHICH_LOAD
|
||||
|
||||
rts
|
||||
|
||||
;==========================
|
||||
; includes
|
||||
;==========================
|
||||
|
||||
; level graphics
|
||||
; .include "graphics/graphics.inc"
|
||||
|
||||
; level data
|
||||
; .include "leveldata_monkey.inc"
|
||||
|
||||
|
||||
; .include "end_level.s"
|
||||
; .include "text_print.s"
|
||||
.include "gr_offsets.s"
|
||||
; .include "gr_fast_clear.s"
|
||||
; .include "keyboard.s"
|
||||
.include "gr_copy.s"
|
||||
; .include "gr_putsprite_crop.s"
|
||||
; .include "joystick.s"
|
||||
; .include "gr_pageflip.s"
|
||||
; .include "decompress_fast_v2.s"
|
||||
; .include "draw_pointer.s"
|
||||
; .include "common_sprites.inc"
|
||||
; .include "guy.brush"
|
||||
|
||||
; .include "monkey_actions.s"
|
||||
; .include "update_bottom.s"
|
||||
|
||||
wait_until_keypressed:
|
||||
lda KEYPRESS
|
||||
bmi wait_until_keypressed
|
||||
|
||||
bit KEYRESET
|
||||
|
||||
rts
|
||||
Loading…
x
Reference in New Issue
Block a user