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seibu.s
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seibu.s
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; DSW:
; 2 - flip
; 1 - skip cop write during interrupt
; 0 - skip default macros
;
; P1 start - module switch
cpu 68000
include "defines.s"
;vectors
ORG 0
dc.l INITIAL_STACK
dc.l START
dc.l 0
dc.l 0
dc.l 0,0,0,0
dc.l 0,0,0,0
dc.l 0,0,0,0
dc.l 0,0,0,0
dc.l 0,0,0,0
dc.l 0,0,0,0
dc.l interrupt
ORG $600
txt_id:
dc.b "13.01.11. (C) TS",0 ; :D
ORG $666
START:
move #$2700, SR
jsr cop_init
jsr macros_start_init
; move.l #$321,d7
; jsr ram_clear
jsr dma_set
jsr default_palette
jsr ram_clear
jsr maps_clear
jsr tilemap_clear
jsr reset_modules
move.l d7,VAR_MTYPE
move.l #BSS_MOD_BASE,VAR_MEMV
jsr default_module
jsr draw_logo
move #$2000, SR
mainloop:
move.l VAR_VBLANK,d0
cmpi.l #$1,d0
bne mainloop
;process inputs
move.w ADDR_INP,d0
move.w ADDR_INP2,d1
andi.l #$3f,d0
lsl.l #$6,d1
or.w d1,d0
eor.w #$ffff,d0
move.l VAR_INPUT,d1
move.l d0,VAR_INPUT
eor.l d0,d1
and.l d0,d1
move.l d1,VAR_INPUT_TRG
clr.l VAR_VBLANK ;reser vblank flag
;check default module (fire 1+2)
move.l VAR_INPUT,d0
btst #5,d0
beq .nodef
;move.l VAR_INPUT,d0
btst #4,d0
beq .nodef
move.l #0,d0
move.l d0,VAR_MODULE
jsr init_module
; bra .end
.nodef:
;check mode switch (p1 start button)
move.l VAR_MODE,d1
move.l VAR_INPUT_TRG,d0
btst #6,d0
beq .noswitch
eor.l #1,d1
move.l d1,VAR_MODE
.noswitch:
btst #0,d1 ;view or module?
bne .module
;process viewer inputs
move.l d0,d1
jsr view_inputs
bra .end
.module:
move.l VAR_MODULE,d0
jsr get_module_parameters
addi.l #12,a1
move.l (a1),a1
jsr (a1)
.end:
jsr view_mem
jsr print_status
jsr print_count
;highlight active
move.l VAR_MODE,d0
btst #0,d0
bne .h2
move.l #(VIEWER_Y-1),d0
move.l #(STATUS_Y+2),d1
move.w #COLOR_GREEN,d2
move.l #$e,d3
jsr draw_frame
move.l #(STATUS_Y+3),d0
move.l #(COUNT_Y-1),d1
move.w #COLOR_RED,d2
move.l #$20,d3
jsr draw_frame
bra .end2
.h2:
move.l #(STATUS_Y+3),d0
move.l #(COUNT_Y-1),d1
move.w #COLOR_GREEN,d2
move.l #$e,d3
jsr draw_frame
move.l #(VIEWER_Y-1),d0
move.l #(STATUS_Y+2),d1
move.w #COLOR_RED,d2
move.l #$20,d3
jsr draw_frame
.end2:
bra mainloop
FRAME_X equ 0
FRAME_WIDTH equ 29
draw_frame:
;d0 y0
;d1 y1
;d2 attrib
;d3 char
move.l d0,d6
move.l d1,d7
;move.l #$0b,d3
; draw horizontal lines
move.l #FRAME_WIDTH,d5
move.l #FRAME_X,d0
.loop:
move.l d6,d1
; jsr print_char
move.l d7,d1
; jsr print_char
addq.l #1,d0
dbra d5,.loop
sub.l d6,d7 ; height
move.l d6,d1
.loopy:
move.l #FRAME_X,d0
jsr print_char
add.l #FRAME_WIDTH,d0
add.l #1,d0
jsr print_char
addq.l #1,d1
dbra d7,.loopy
rts
include "viewmem.s"
macros_start_init:
;set dma(?) offsets, to use with palette/bg update triggers
moveq.l #0,d7
move.w ADDR_DSW, D0
btst #$0, D0
bne .skip_default_macros
;move.w d0,d1
;lsr.w #6,d1
;and.l #3,d1
;cmp.l #0,d1
;bne .not0
lea default_macros,a0
jsr macros_copy
moveq.l #1,d7
; bra .skip_default_macros
;.not0:
; lea revival_macros,a0
; jsr macros_copy
; moveq.l #2,d7
; bra .skip_default_macros
.skip_default_macros:
rts
ram_clear:
;clear ram
movea.l A7, A0
move.l #$0, D0
.loop:
movem.l D0, -(A0)
cmpa.l #$108000, A0
bne .loop
rts
maps_clear:
move.l #$102000-4, A0
moveq #$0, D0
.loop:
movem.l D0, -(A0)
cmpa.l #$100800, A0
bne .loop
rts
dma_set:
;set dma addresses
lea COP_OFFSET,a0
move.w #$00, ($3e,a0) ; ???
move.w #$600, ($74,a0) ; ???
move.w #$14, ($7e,a0) ; slot
move.w #$4020, ($78,a0) ; offset
move.w #$27f, ($7a,a0) ; length
move.w #$0, ($7c,a0) ; ?
move.w #$15, ($7e,a0) ; slot
move.w #$4100, ($78,a0) ; offset
move.w #$ff, ($7a,a0) ; length
move.w #$0, ($7c,a0) ; ?
rts
default_palette:
; create palette
lea palette,a0
lea PALETTE_RAM, a1
move.l #$400-1, d0
.loop:
move.l (a0)+,(a1)+
dbra d0,.loop
rts
cop_init:
move.w #$f, $100640.l
move.w #$f, $100642.l
move.w #$b0, $100644.l
move.w #$d7, $100646.l
move.w #$e0, $100648.l
move.w #$f, $10064a.l
move.w #$e7, $10064c.l
move.w #$f3, $10064e.l
move.w #$7d, $100650.l
move.w #$1fe, $100652.l
move.w #$0, $100654.l
move.w #$2, $100656.l
move.w #$0, $100658.l
move.w #$10, $10065c.l ;was: 0
move.w #$34, $10067c.l
move.w #$3f, $10067e.l
move.w #$a8a8, $100682.l
move.w #$1830, $100686.l
; scroll regs:
move.w #$0, $100660.l
move.w #$0, $100662.l
move.w #$0, $100664.l
move.w #$0, $100666.l
move.w #$0, $100668.l
move.w #$0, $10066a.l
; screen orientation related
move.w #$0, $100470.l
move.w #$0, $10068c.l
move.w #$1, $100680.l
move.w #$ffff, $10068e.l
move.w #$0, $100680.l
move.w #$9, $100688.l
move.w #$1e, $100684.l
move.w #$0, $10065a.l
move.w #$1d8, $10066c.l
move.w #$1ff, $10066e.l
move.w #$1da, $100670.l
move.w #$1ff, $100672.l
move.w #$1d9, $100674.l
move.w #$1ff, $100676.l
move.w #$1d8, $100678.l
move.w #$1ff, $10067a.l
move.w ADDR_DSW, D0
btst #$2, D0
bne .end
move.w #$1000, $100470.l
move.w #$ff, $10068c.l
move.w #$1, $100680.l
move.w #$ffff, $10068e.l
move.w #$0, $100680.l
move.w #$19, $100688.l
move.w #$e1, $100684.l
move.w #$1, $10065a.l
move.w #$127, $10066c.l
move.w #$100, $10066e.l
move.w #$125, $100670.l
move.w #$100, $100672.l
move.w #$126, $100674.l
move.w #$100, $100676.l
move.w #$127, $100678.l
move.w #$100, $10067a.l
.end:
rts
include "interrupt.s"
print_text:
;a0 points to text string
;d0=x
;d1=y
;d2=attribs
movem.l D0-D1/A0-A1, -(A7)
lea TILEMAP,a1
andi.l #$ff,d0
andi.l #$ff,d1
lsl.l #1,d0 ;x*2
lsl.l #7,d1
add.l d1,d0
add.l d0,a1
.loop:
moveq.l #0,d0
move.b (a0)+,d0
cmpi.b #0,d0
beq .end
or.w d2,d0
move.w d0,(a1)+
bra .loop
.end:
movem.l (A7)+, D0-D1/A0-A1
rts
print_flashing_num:
;d0=x
;d1=y
;d2=attribs
;d3 = num
;d4 = type (num of digits )
;d5 = position (from end)
movem.l D0-D5/A0, -(A7)
move.l d3,d0
move.l d4,d1
lea TMP_STRING,a0
move.b #0,(a0,d1)
subi.l #1,d1
.loop:
move.b d0,d2
andi.w #$f,d2
cmpi.b #$a,d2
bge .char
addi.b #$30,d2
bra .skip
.char:
addi.b #$37,d2
.skip:
move.b d2,(a0,d1)
lsr.l #4,d0
dbra d1,.loop
movem.l (A7)+, D0-D5/A0
movem.l D4-D5/A0, -(A7)
lea TMP_STRING,a0
sub.l d5,d4
subq. #1,d4
moveq #$20,d5
move.b d5,(a0,d4)
jsr print_text
movem.l (A7)+, D4-D5/A0
rts
print_num:
;d0=x
;d1=y
;d2=attribs
;d3 = num
;d4 = type (num of digits )
movem.l D0-D4/A0, -(A7)
move.l d3,d0
move.l d4,d1
lea TMP_STRING,a0
move.b #0,(a0,d1)
subi.l #1,d1
.loop:
move.b d0,d2
andi.w #$f,d2
cmpi.b #$a,d2
bge .char
addi.b #$30,d2
bra .skip
.char:
addi.b #$37,d2
.skip:
move.b d2,(a0,d1)
lsr.l #4,d0
dbra d1,.loop
movem.l (A7)+, D0-D4/A0
movem.l A0, -(A7)
lea TMP_STRING,a0
jsr print_text
movem.l (A7)+, A0
rts
extract_bits:
;d0 data
movem.l D0-D2/A0, -(A7)
lea TMP_STRING,a0
move.l #8-1,d2
.loop:
move.b #'0',d1
btst d2,d0
beq .write
move.b #'1',d1
.write:
move.b d1,(a0)+
dbra d2,.loop
moveq #0,d1
move.b d1,(a0)
movem.l (A7)+, D0-D2/A0
rts
print_char:
;d0=x
;d1=y
;d2=attribs
;d3=code
movem.l D0-D3/A1, -(A7)
lea TILEMAP,a1
andi.l #$ff,d0
andi.l #$ff,d1
lsl.l #1,d0 ;x*2
lsl.l #7,d1
add.l d1,d0
andi.w #$fff,d3
or.w d2,d3
move.w d3,(a1,d0)
movem.l (A7)+, D0-D3/A1
rts
tilemap_clear:
lea TILEMAP,a0
move.l #$20,d0
move.l #$4000,d1
move.l #(32*32),d1
.loop:
move.w d0,(a0)+
dbra d1,.loop
rts
clear_mod_vram:
;returns in a1 top of the area
lea TILEMAP,a1
addi. #(MOD_Y*64*2),a1
move.l a1,a2
move.l #$00200020,d0
move.l #(6*64),d1
.loop:
move.l d0,(a1)+
dbra d1,.loop
move.l a2,a1
rts
default_module:
move.l #0,VAR_MODULE
init_module:
move.l VAR_MODULE,d0
jsr get_module_parameters
addi.l #8,a1
move.l (a1),a1
jsr (a1)
rts
get_module_parameters:
; d0 = num
; ret a0 = mem
; ret a1 = start of table
;proc address
move.l d0,d2
lsl.l #2,d2
lea module_list,a0
move.l (a0,d2),a1
;mem address
lea BSS_MOD_BASE,a0
lsl.l #8,d0
add.l d0,a0
rts
reset_modules:
; reset all modules
moveq.l #0,d1
lea module_list, a3
move.l #BSS_MOD_BASE,a0
.loop:
move.l (a3)+, a2
cmpi.w #-$1,a2
beq .end
addq.l #4,a2 ;skip name offset
move.l (a2),a2
addi.l #1,d1
jsr (a2) ;reset proc
add.l #$100,a0 ;inc ram base for module
bra .loop
.end:
move.l d1,VAR_NUM_MODS
rts
logo:
dc.b " bb ",0
dc.b " bb b b ",0
dc.b " bbbb bbbb rr bb ",0
dc.b "bbb bb bb bbbb bb bb ",0
dc.b " bbbb bbbb rr bb bb bb bb ",0
dc.b " bbb bb bb rr bb bb bb bb ",0
dc.b "bbbbb bbbb rr bbbb bbbb ",0
dc.b 1
LOGO_X equ 1
LOGO_Y equ 18
draw_logo:
lea logo,a0
move.l #$e,d3
move.l #LOGO_Y,d1
.loopx1:
move.l #LOGO_X,d0
.loopx:
move.b (a0)+,d6
cmp.b #0,d6
beq .endlx
cmp.b #1,d6
beq .endly
cmp.b #' ',d6
bne .notblack
move.w #COLOR_BLACK,d2
bra .print
.notblack:
cmp.b #'b',d6
bne .notblue
move.w #COLOR_WHITE,d2
bra .print
.notblue:
move.w #COLOR_GREEN,d2
.print:
jsr print_char
add.l #1,d0
bra .loopx
.endlx:
add.l #1,d1
bra .loopx1
.endly:
move.l #ID_Y,d1
move.l #ID_X-11,d0
move.w #COLOR_WHITE,d2
lea txt_id,a0
jsr print_text
rts
align 4
module_list:
dc.l submod_selector
dc.l submod_all_macros
dc.l submod_exec_macro
dc.l -1
include "mod_selector.s"
include "mod_macros.s"
include "mod_exec.s"
include "copmacros.s"
palette:
include "paldata.s"
edit_num:
;d0 = data
;d1 = controls
;d2 = pos
;d3 = pos (1<<num_bits)
movem.l D3-D6, -(A7)
sub.l #1,d3 ; make mask form num of bits
move.l d1,d6
and.l #$f,d6
beq .nochange
btst #2,d1
beq .noincpos
add.l #1,d2
and.l d3,d2
.noincpos:
btst #3,d1
beq .nodecpos
sub.l #1,d2
and.l d3,d2
.nodecpos:
move.l d2,d6 ; pos
move.l #$f,d3 ;mask
lsl.l #2,d2 ;*4
lsl.l d2,d3 ; shifted mask
move.l #1,d4 ; step
lsl.l d2,d4 ;inc/dec
move.l d3,d2
not.l d2 ;inv mask
move.l d0,d5
and.l d3,d0 ;data
and.l d2,d5 ;rest
btst #0,d1
beq .noup
add.l d4,d0
.noup:
btst #1,d1
beq .nodown
sub.l d4,d0
.nodown:
and.l d3,d0
or.l d5,d0
move.l d6,d2
.nochange:
movem.l (A7)+, D3-D6
rts
end START
end START
end START
end START