|
Message
From: cvs at opencores.org<cvs@o...>
Date: Sat May 24 20:17:47 CEST 2008
Subject: [cvs-checkins] MODIFIED: z80soc ...
Date: 00/08/05 24:20:17 Added: z80soc/S3E/rom SoC_S3E.z8a
Log:
Version 0.6
Revision Changes Path
1.1 z80soc/S3E/rom/SoC_S3E.z8a
http://www.opencores.org/cvsweb.shtml/z80soc/S3E/rom/SoC_S3E.z8a?rev=1.1&content-type=text/x-cvsweb-markup
Index: SoC_S3E.z8a
===================================================================
ld sp,(7FDEh) ; Put Stack on top of memory
inicio:
ld a,(7FDDH)
or a
jr z,inic1
call set_lcd ; Is Z80soc-s3e
inic1:
call clear
ld de,4034h
ld hl,Text1
call printmsg
ld de,405Ch
ld hl,Text2
call printmsg
call Border
ld de,4146h
ld hl,Text3
call printmsg
ld de,4196h
ld hl,Text4
call printmsg
ld de,41E6h
ld hl,Text5
call printmsg
ld de,4236h
ld hl,Text6
call printmsg
ld de,425Eh
ld hl,Text7
call printmsg
; check soz version
ld hl,DE1_Version
ld a,(7FDDH)
or a
jr z,print_v
ld hl,S3E_Version
print_v:
ld de,4087h
call printmsg
setprint:
ld de,42D6h
ld bc,30
loopprint:
push bc
push de
call delay
call rotate
ld a,(7FDDH) ; get z80soc version
or a
jr z,looppr2
call s3e_routine ; Is Z80-S3E
looppr2:
call read_kbd
pop de
pop bc
or a
jr z,loopprint
cp 41h
jr z,go_on
out (01H),a
ld l,a
ld a,(7FDDh) ; get z80soc version
or a
jr nz,looppr3
ld a,l
out (11h),a ; Use HEX display if DE1
looppr3:
ld (de),a
inc de
dec bc
ld a,b
or c
jr z,setprint
jr loopprint
go_on:
ld hl,8000h ; RAM Address
ld a,0 ; Value to store in memory
loop1:
ld (hl),a ; Store A into Memory (HL)
inc hl ; Point to next memory location
inc a ; Add 1 to value to store in memory
jr nz,loop1 ; If A not equal 0 continue loop1
; When A=FFh, and we make A=A+1 ...
; A becomes 100h
; But, A is an 8 bits register, and
; can only store the two last hex digits,
; that is, 8 bits.
call read_key0 ; Wait until KEY0 is pressed
;
ld hl,8000h ; Get back the start RAM address
loop2:
ld a,(7FDDh) ; get z80soc version
or a
jr nz,skip2_de1
ld a,h
out (11h),a
ld a,l
out (10h),a
skip2_de1:
ld a,(hl) ; Read back the values stored in loop1
out (01h),a ; Send to Green Leds
call delay ; Call sub-routine to delay some time
inc hl ; Add 1 to the memory location
ld a,(hl) ; Read the value in the memory
cp 0FFh ; check if equal 255
jr nz,skip2_de1 ; If not equal 255, continue loop2
; end of First execution
call read_key0 ; Wait until KEY0 is pressed
jP inicio ; Restart program
read_key0:
loop3:
call delay
in a,(30h) ; Read KEYs (all 4 KEYs)
cp 1 ; check if returns "00001110"
jr nz,loop3 ; KEY0 not pressed, continue checking
ret
iodelay:
in a,(20h) ; Read SW(7-0)
or a
jr nz,loop4
ld a,1 ; Read the number of times to loop
loop4:
dec a ; Start counting backwards
jr nz,loop4 ; If A greather than 0, continue loop
ret ; return to calling program
delay:
in a,(20h) ; Read SW(7-0)
or a
jr nz,loop5
ld a,1
loop5:
push af
ld bc,5000 ; Every delay has at least 255 loops
loop6:
dec bc ; Start counting backwards
ld a,b
or c
jr nz,loop6 ; If A greather than 0, continue loop
pop af ; Get multiplier back
dec a ;
jr nz,loop5
ret ; return to calling program
clear:
ld a,0
out (91h),a ; video cursor x = 0
out (92h),a ; video cursor y = 0
ld bc,1200
clean_loop:
ld a,20h
out (90h),a ; print character to video
; cursor x,y is automatically updated
; by hardware
dec bc
ld a,b
or c
jr nz,clean_loop
ret
printmsg:
ploop:
ld a,(hl)
or a
ret z
ld (de),a
inc hl
inc de
jr ploop
read_kbd:
in a,(80h)
ret
Border:
ld hl,Lineu
ld de,40F5H
call printmsg
ld de,411DH
ld a,10
brdloop:
ld hl,Column
push hl
push af
push de
call printmsg
pop de
pop af
ld hl,40
add hl,de
ld d,h
ld e,l
pop hl
dec a
jr nz,brdloop
ld hl,Lined
call printmsg
ret
rotate:
; save first line of box
ld hl,411Eh
ld de,9000h
ld bc,30
ldir
; move all lines up
ld hl,4146h ; this is second line of box
ld de,411Eh ; this is first line of box
ld b,9
loop_rotate:
push bc
push hl
push de
ld bc,30
ldir
pop de
ld hl,40
add hl,de
ld d,h
ld e,l
pop hl
ld bc,40
add hl,bc
pop bc
djnz loop_rotate
; now get back the first line saved in 9000h
; and put on the last line of box
ld hl,9000h
ld bc,30
ldir
ret
s3e_routine:
push bc
push de
; print message in LCD display
; Check of Rotary Knob is moving
call read_rot
; Is it rotating to the right ?
cp 1
jr nz,check_left
call roll_lcd_right
ld a,1
jr printlcd
check_left:
; Is it rotating to the left?
cp 2
jr nz,dec_jump
call roll_lcd_left
ld a,128
printlcd:
out (01h),a
ld de,7FE0h
ld hl,9100h
call printmsg
dec_jump:
pop de
pop bc
ret
set_lcd:
ld de,9100h
ld hl,lcdtxt
ld bc,33
ldir
ld de,7FE0h
ld hl,9100h
ld bc,32
ldir
ret
read_rot:
CALL DELAY_MULT
LD A,0
RET NZ
IN A,(70H)
RET
DELAY_ROT:
LD A,(9000H)
DEC A
LD (9000H),A
RET
DELAY_MULT:
LD A,(9001H)
DEC A
JR NZ,DLY_M1
LD A,10H
DLY_M1:
LD (9001H),A
RET
roll_lcd_left:
; save the first char on the left, for every line
ld a,(9100h)
ld (9002H),a
ld a,(9110h)
ld (9003H),a
ld HL,9101H
ld de,9100h
ld bc,31
ldir
ld a,(9002h)
ld (910Fh),a
ld a,(9003h)
ld (911Fh),a
ret
roll_lcd_right:
; save the first char on the left, for every line
ld a,(910Fh)
ld (9002H),a
ld a,(911Fh)
ld (9003H),a
ld HL,911EH
ld de,911Fh
ld bc,31
lddr
ld a,(9002h)
ld (9100h),a
ld a,(9003h)
ld (9110h),a
ret
Text1:
db "Z80 SYSTEM ON CHIP"
db 0
Text2:
db "RONIVON COSTA 2008"
db 0
Text3:
db " |!#$%&/()=?*`+´ç~^,.;:\<>"
db 0
Text4:
db " ABCDEFGHIJKLMNOPQRSTUVWXYZ"
db 0
Text5:
db " abcdefghijklmnopqrstuvwxyz"
db 0
Text6:
db " 0123456789"
db 0
Text7:
db 2,3,4,11,12,13,14,18,24,25,26,27,232,233,235,187,188,138,134,135,129,128,1,6,7,8,9,10,29,31
db 0
Lineu:
db 201,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,187
db 0
Lined:
db 200,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,205,188
db 0
Column:
db 186
db " "
db 186
db 0
lcdtxt:
db " Z80 SYSTEM "
db " RONIVON COSTA "
db 0
DE1_Version:
db "DE1 Version"
db 0
S3E_Version:
db "S3E Version"
db 0
|
 |
Browse
