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Merge pull request #7 from cvemu/master

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Initial Creativision Import
This commit is contained in:
Bob Andrews 2016-02-28 18:25:01 +01:00
commit a8d3b83c43
23 changed files with 956 additions and 0 deletions
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38
asminc/creativision.inc Normal file
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;*
;** VTech Creativision Definitions
;*
;** Screen
SCREEN_ROWS = 24
SCREEN_COLS = 32
SCREEN_PTR = $3A
CURSOR_X = $3C
CURSOR_Y = $3D
;** VDP
VDP_CONTROL_W = $3001
VDP_DATA_W = $3000
VDP_STATUS_R = $2001
VDP_DATA_R = $2000
;** PIA
PIA0_DATA = $1000
PIA0_STATUS = $1001
PIA1_DATA = $1002
PIA1_STATUS = $1003
;** General
CH_VLINE = 33
CH_HLINE = 34
CH_ULCORNER = 35
CH_URCORNER = 36
CH_LLCORNER = 37
CH_LRCORNER = 38
;** I/O
ZP_KEYBOARD = $10
ZP_JOY0_DIR = $11
ZP_JOY1_DIR = $13
ZP_JOY_LBUTTONS = $16
ZP_JOY_RBUTTONS = $17

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/* CreatiVision Header */
#ifndef _CVISION_H
#define _CVISION_H
#define CH_VLINE 33
#define CH_HLINE 34
#define CH_ULCORNER 35
#define CH_URCORNER 36
#define CH_LLCORNER 37
#define CH_LRCORNER 38
#define DYN_DRV 0
/* Colours - from TMS9918 */
#define C_TRANSPARENT 0
#define C_BLACK 1
#define C_MED_GREEN 2
#define C_LIGHT_GREEN 3
#define C_DARK_BLUE 4
#define C_LIGHT_BLUE 5
#define C_DARK_RED 6
#define C_CYAN 7
#define C_MED_RED 8
#define C_LIGHT_RED 9
#define C_DARK_YELLOW 10
#define C_LIGHT_YELLOW 11
#define C_DARK_GREEN 12
#define C_MAGENTA 13
#define C_GREY 14
#define C_WHITE 15
/* Joystick states */
#define JOY_UP 5
#define JOY_DOWN 1
#define JOY_LEFT 7
#define JOY_RIGHT 3
#define JOY_LEFT_UP 6
#define JOY_LEFT_DOWN 8
#define JOY_RIGHT_UP 4
#define JOY_RIGHT_DOWN 2
#define JOY_LBUTTON 1
#define JOY_RBUTTON 2
/* Joystick values */
#define JOY_LEFT_DIR 1
#define JOY_RIGHT_DIR 2
#define JOY_LEFT_BUTTONS 3
#define JOY_RIGHT_BUTTONS 4
/* Protos */
void __fastcall__ psg_outb( unsigned char b );
void __fastcall__ psg_delay( unsigned char b );
void psg_silence( void );
void __fastcall__ bios_playsound( void *a, unsigned char b);
unsigned char __fastcall__ joystate( unsigned char which );
#endif

15
libsrc/creativision/_scrsize.s Normal file
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;*
;** _scrsize.s
;*
.export screensize
.include "creativision.inc"
.proc screensize
ldx #SCREEN_COLS
ldy #SCREEN_ROWS
rts
.endproc

62
libsrc/creativision/boxchars.inc Normal file
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; Boxchars
boxchars:
; Vertical Line
.byte $18
.byte $18
.byte $18
.byte $18
.byte $18
.byte $18
.byte $18
.byte $18
; Horizontal Line
.byte 0
.byte 0
.byte 0
.byte $ff
.byte 0
.byte 0
.byte 0
.byte 0
; Top Left
.byte 0
.byte 0
.byte 0
.byte $1f
.byte $18
.byte $18
.byte $18
.byte $18
; Top Right
.byte 0
.byte 0
.byte 0
.byte $F8
.byte $18
.byte $18
.byte $18
.byte $18
; Bottom Left
.byte $18
.byte $18
.byte $18
.byte $1F
.byte 0
.byte 0
.byte 0
.byte 0
; Bottom Right
.byte $18
.byte $18
.byte $18
.byte $F8
.byte 0
.byte 0
.byte 0
.byte 0

29
libsrc/creativision/cclear.s Normal file
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;*
;* void cclearxy (unsigned char x, unsigned char y, unsigned char length);
;* void cclear (unsigned char length);
;*
.export _cclearxy, _cclear
.import popa, _gotoxy, cputdirect
.importzp tmp1
_cclearxy:
pha ; Save length
jsr popa ; get Y
jsr _gotoxy
pla
_cclear:
cmp #0 ; Zero length?
beq L2
sta tmp1
L1:
lda #$20 ; Space
jsr cputdirect
dec tmp1
bne L1
L2: rts

17
libsrc/creativision/cgetc.s Normal file
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;* cgetc
.export _cgetc
.include "creativision.inc"
_cgetc:
lda #$80
L1:
bit ZP_KEYBOARD
bpl L1
lda ZP_KEYBOARD
and #$7f
rts

24
libsrc/creativision/chline.s Normal file
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;* void chlinexy (unsigned char x, unsigned char y, unsigned char length);
;* void chline (unsigned char length);
.export _chlinexy, _chline
.import popa, _gotoxy, cputdirect
.importzp tmp1
.include "creativision.inc"
_chlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length
_chline:
cmp #0 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: lda #CH_HLINE ; Horizontal line, screen code
jsr cputdirect ; Direct output
dec tmp1
bne L1
L9: rts

41
libsrc/creativision/clrscr.s Normal file
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;*
;* clrscr
;*
;* NB: All screen functions assume Graphics Mode 1 in a default configuration.
;* Therefore, this is hard coded to use $1000-$12FF as screen VRAM.
.export _clrscr
.include "creativision.inc"
_clrscr:
sei ; Disable interrupts. Default INT handler reads VDP_STATUS
; and would lose any setup done here.
lda #$00 ; VRAM offset low
sta VDP_CONTROL_W
lda #$50 ; VRAM offset high ($10 OR $40)
sta VDP_CONTROL_W
lda #$C0 ; Space from ROM setup
ldx #0
ldy #3
L1: sta VDP_DATA_W
inx
bne L1
dey
bne L1
cli ; Let interrupts go again
lda #0
sta CURSOR_X
sta CURSOR_Y
sta <SCREEN_PTR
lda #$10
sta >SCREEN_PTR
rts

13
libsrc/creativision/color.s Normal file
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;*
;* unsigned char __fastcall__ textcolor (unsigned char color);
;* unsigned char __fastcall__ bgcolor (unsigned char color);
;* unsigned char __fastcall__ bordercolor (unsigned char color);
;*
.export _textcolor, _bgcolor, _bordercolor
.import return0
.include "creativision.inc"
_bordercolor = return0;
_textcolor = return0;
_bgcolor = return0;

125
libsrc/creativision/cputc.s Normal file
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;
; Written by Groepaz/Hitmen <groepaz@gmx.net>
; Cleanup by Ullrich von Bassewitz <uz@cc65.org>
;
; void cputcxy (unsigned char x, unsigned char y, char c);
; void cputc (char c);
;
.export _cputcxy, _cputc, cputdirect, putchar
.export newline
.constructor initconio
.import popa, _gotoxy
.import setcursor
.importzp tmp3,tmp4
.include "creativision.inc"
.include "boxchars.inc"
;-----------------------------------------------------------------------------
.code
_cputcxy:
pha ; Save C
jsr popa ; Get Y
jsr _gotoxy ; Set cursor, drop x
pla ; Restore C
; Plot a character - also used as internal function
_cputc: cmp #$0d ; CR?
bne L1
lda #0
sta CURSOR_X
beq plot ; Recalculate pointers
L1: cmp #$0a ; LF?
beq newline ; Recalculate pointers
; Printable char of some sort
cputdirect:
jsr putchar ; Write the character to the screen
; Advance cursor position
advance:
ldy CURSOR_X
iny
cpy #SCREEN_COLS
bne L3
inc CURSOR_Y ; new line
ldy #0 ; + cr
L3: sty CURSOR_X
jmp plot
newline:
inc CURSOR_Y
; Set cursor position, calculate RAM pointers
plot: ldy CURSOR_X
ldx CURSOR_Y
jmp setcursor ; Set the new cursor
; Write one character to the screen without doing anything else, return X
; position in Y
putchar:
cmp #$5B
bcc IS_UPPER
clc
sbc #$1F
IS_UPPER:
cmp #$20
bcc BAD_CHAR
pha
lda SCREEN_PTR
sei
sta VDP_CONTROL_W
lda SCREEN_PTR+1
ora #$40
sta VDP_CONTROL_W
pla
clc
adc #160
sta VDP_DATA_W
cli
BAD_CHAR:
jmp plot
;-----------------------------------------------------------------------------
; Initialize the conio subsystem. Code goes into the INIT segment, which may
; be reused after startup.
.segment "INIT"
initconio:
lda #$0
sta SCREEN_PTR
lda #$10
sta SCREEN_PTR+1
; Copy box characters to slot
sei
lda #08
sta VDP_CONTROL_W
lda #$46
sta VDP_CONTROL_W
ldx #0
LL:
lda boxchars,x
sta VDP_DATA_W
inx
cpx #48
bne LL
cli
jmp plot

172
libsrc/creativision/ctype.s Normal file
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;
; Ullrich von Bassewitz, 02.06.1998
;
; Character specification table.
;
; The tables are readonly, put them into the rodata segment
.rodata
; The following 256 byte wide table specifies attributes for the isxxx type
; of functions. Doing it by a table means some overhead in space, but it
; has major advantages:
;
; * It is fast. If it were'nt for the slow parameter passing of cc65, one
; could even define macros for the isxxx functions (this is usually
; done on other platforms).
;
; * It is highly portable. The only unportable part is the table itself,
; all real code goes into the common library.
;
; * We save some code in the isxxx functions.
;
;
; Bit assignments:
;
; 0 - Lower case char
; 1 - Upper case char
; 2 - Numeric digit
; 3 - Hex digit (both, lower and upper)
; 4 - Control character
; 5 - The space character itself
; 6 - Other whitespace (that is: '\f', '\n', '\r', '\t' and '\v')
; 7 - Space or tab character
.export __ctype
__ctype:
.repeat 2 ; 2 times for normal and inverted
.byte $10 ; 0/00 ___ctrl_@___
.byte $10 ; 1/01 ___ctrl_A___
.byte $10 ; 2/02 ___ctrl_B___
.byte $10 ; 3/03 ___ctrl_C___
.byte $10 ; 4/04 ___ctrl_D___
.byte $10 ; 5/05 ___ctrl_E___
.byte $10 ; 6/06 ___ctrl_F___
.byte $10 ; 7/07 ___ctrl_G___
.byte $10 ; 8/08 ___ctrl_H___
.byte $D0 ; 9/09 ___ctrl_I___
.byte $50 ; 10/0a ___ctrl_J___
.byte $50 ; 11/0b ___ctrl_K___
.byte $50 ; 12/0c ___ctrl_L___
.byte $50 ; 13/0d ___ctrl_M___
.byte $10 ; 14/0e ___ctrl_N___
.byte $10 ; 15/0f ___ctrl_O___
.byte $10 ; 16/10 ___ctrl_P___
.byte $10 ; 17/11 ___ctrl_Q___
.byte $10 ; 18/12 ___ctrl_R___
.byte $10 ; 19/13 ___ctrl_S___
.byte $10 ; 20/14 ___ctrl_T___
.byte $10 ; 21/15 ___ctrl_U___
.byte $10 ; 22/16 ___ctrl_V___
.byte $10 ; 23/17 ___ctrl_W___
.byte $10 ; 24/18 ___ctrl_X___
.byte $10 ; 25/19 ___ctrl_Y___
.byte $10 ; 26/1a ___ctrl_Z___
.byte $10 ; 27/1b ___ctrl_[___
.byte $10 ; 28/1c ___ctrl_\___
.byte $10 ; 29/1d ___ctrl_]___
.byte $10 ; 30/1e ___ctrl_^___
.byte $10 ; 31/1f ___ctrl_____
.byte $A0 ; 32/20 ___SPACE___
.byte $00 ; 33/21 _____!_____
.byte $00 ; 34/22 _____"_____
.byte $00 ; 35/23 _____#_____
.byte $00 ; 36/24 _____$_____
.byte $00 ; 37/25 _____%_____
.byte $00 ; 38/26 _____&_____
.byte $00 ; 39/27 _____'_____
.byte $00 ; 40/28 _____(_____
.byte $00 ; 41/29 _____)_____
.byte $00 ; 42/2a _____*_____
.byte $00 ; 43/2b _____+_____
.byte $00 ; 44/2c _____,_____
.byte $00 ; 45/2d _____-_____
.byte $00 ; 46/2e _____._____
.byte $00 ; 47/2f _____/_____
.byte $0C ; 48/30 _____0_____
.byte $0C ; 49/31 _____1_____
.byte $0C ; 50/32 _____2_____
.byte $0C ; 51/33 _____3_____
.byte $0C ; 52/34 _____4_____
.byte $0C ; 53/35 _____5_____
.byte $0C ; 54/36 _____6_____
.byte $0C ; 55/37 _____7_____
.byte $0C ; 56/38 _____8_____
.byte $0C ; 57/39 _____9_____
.byte $00 ; 58/3a _____:_____
.byte $00 ; 59/3b _____;_____
.byte $00 ; 60/3c _____<_____
.byte $00 ; 61/3d _____=_____
.byte $00 ; 62/3e _____>_____
.byte $00 ; 63/3f _____?_____
.byte $00 ; 64/40 _____@_____
.byte $0A ; 65/41 _____A_____
.byte $0A ; 66/42 _____B_____
.byte $0A ; 67/43 _____C_____
.byte $0A ; 68/44 _____D_____
.byte $0A ; 69/45 _____E_____
.byte $0A ; 70/46 _____F_____
.byte $02 ; 71/47 _____G_____
.byte $02 ; 72/48 _____H_____
.byte $02 ; 73/49 _____I_____
.byte $02 ; 74/4a _____J_____
.byte $02 ; 75/4b _____K_____
.byte $02 ; 76/4c _____L_____
.byte $02 ; 77/4d _____M_____
.byte $02 ; 78/4e _____N_____
.byte $02 ; 79/4f _____O_____
.byte $02 ; 80/50 _____P_____
.byte $02 ; 81/51 _____Q_____
.byte $02 ; 82/52 _____R_____
.byte $02 ; 83/53 _____S_____
.byte $02 ; 84/54 _____T_____
.byte $02 ; 85/55 _____U_____
.byte $02 ; 86/56 _____V_____
.byte $02 ; 87/57 _____W_____
.byte $02 ; 88/58 _____X_____
.byte $02 ; 89/59 _____Y_____
.byte $02 ; 90/5a _____Z_____
.byte $00 ; 91/5b _____[_____
.byte $00 ; 92/5c _____\_____
.byte $00 ; 93/5d _____]_____
.byte $00 ; 94/5e _____^_____
.byte $00 ; 95/5f _UNDERLINE_
.byte $00 ; 96/60 ___grave___
.byte $09 ; 97/61 _____a_____
.byte $09 ; 98/62 _____b_____
.byte $09 ; 99/63 _____c_____
.byte $09 ; 100/64 _____d_____
.byte $09 ; 101/65 _____e_____
.byte $09 ; 102/66 _____f_____
.byte $01 ; 103/67 _____g_____
.byte $01 ; 104/68 _____h_____
.byte $01 ; 105/69 _____i_____
.byte $01 ; 106/6a _____j_____
.byte $01 ; 107/6b _____k_____
.byte $01 ; 108/6c _____l_____
.byte $01 ; 109/6d _____m_____
.byte $01 ; 110/6e _____n_____
.byte $01 ; 111/6f _____o_____
.byte $01 ; 112/70 _____p_____
.byte $01 ; 113/71 _____q_____
.byte $01 ; 114/72 _____r_____
.byte $01 ; 115/73 _____s_____
.byte $01 ; 116/74 _____t_____
.byte $01 ; 117/75 _____u_____
.byte $01 ; 118/76 _____v_____
.byte $01 ; 119/77 _____w_____
.byte $01 ; 120/78 _____x_____
.byte $01 ; 121/79 _____y_____
.byte $01 ; 122/7a _____z_____
.byte $00 ; 123/7b _____{_____
.byte $00 ; 124/7c _____|_____
.byte $00 ; 125/7d _____}_____
.byte $00 ; 126/7e _____~_____
.byte $40 ; 127/7f ____DEL____
.endrepeat

29
libsrc/creativision/cvline.s Normal file
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;
; Ullrich von Bassewitz, 08.08.1998
;
; void cvlinexy (unsigned char x, unsigned char y, unsigned char length);
; void cvline (unsigned char length);
;
.export _cvlinexy, _cvline
.import popa, _gotoxy, putchar, newline
.importzp tmp1
.include "creativision.inc"
_cvlinexy:
pha ; Save the length
jsr popa ; Get y
jsr _gotoxy ; Call this one, will pop params
pla ; Restore the length and run into _cvline
_cvline:
cmp #0 ; Is the length zero?
beq L9 ; Jump if done
sta tmp1
L1: lda #CH_VLINE ; Vertical bar
jsr putchar ; Write, no cursor advance
jsr newline ; Advance cursor to next line
dec tmp1
bne L1
L9: rts

19
libsrc/creativision/gotox.s Normal file
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;
; Ullrich von Bassewitz, 2003-05-02
;
; void gotox (unsigned char x);
;
.export _gotox
.import setcursor
.include "creativision.inc"
.proc _gotox
sta CURSOR_X ; Set new position
tay
ldx CURSOR_Y
jmp setcursor ; Set the cursor to the new position
.endproc

22
libsrc/creativision/gotoxy.s Normal file
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;
; Ullrich von Bassewitz, 06.08.1998
;
; void gotoxy (unsigned char x, unsigned char y);
;
.export _gotoxy
.import setcursor
.import popa
.include "creativision.inc"
.proc _gotoxy
sta CURSOR_Y ; Set Y
jsr popa ; Get X
sta CURSOR_X ; Set X
tay
ldx CURSOR_Y
jmp setcursor ; Set the cursor position
.endproc

19
libsrc/creativision/gotoy.s Normal file
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;
; Ullrich von Bassewitz, 2003-05-02
;
; void gotoy (unsigned char y);
;
.export _gotoy
.import setcursor
.include "creativision.inc"
.proc _gotoy
sta CURSOR_Y ; Set new position
tax
ldy CURSOR_X
jmp setcursor ; Set the cursor to the new position
.endproc

58
libsrc/creativision/joy.s Normal file
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;*
;* Creativision Joystick Function
;*
;* unsigned char __fastcall__ joystate(unsigned char joy);
;*
;* JOY_1 -> Return Left Joystick direction
;* JOY_2 -> Return Right Joystick direction
;* JOY_3 -> Return Left Joystick buttons
;* JOY_4 -> Return Right Joystick buttons
;*
;* Will only work if interrupts are enabled.
.export _joystate
.include "creativision.inc"
_joystate:
cmp #1 ; Left Direction
bne l1
lda $11
beq l5
and #$f
lsr a
tax
inx
txa
rts
l1: cmp #2 ; Right Direction
bne l2
lda $13
beq l5
and #$f
lsr a
tax
inx
txa
rts
l2: cmp #3 ; Left Buttons
bne l3
lda $16
beq l5
and #$f
rts
l3: cmp #4
bne l4
lda $17
beq l5
and #$f
rts
l4: lda #0
l5: rts

9
libsrc/creativision/libref.s Normal file
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;
; Oliver Schmidt, 2013-05-31
;
.export joy_libref, tgi_libref
.import _exit
joy_libref := _exit
tgi_libref := _exit

24
libsrc/creativision/mainargs.s Normal file
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;
; Ullrich von Bassewitz, 2003-03-07
;
; Setup arguments for main
;
.constructor initmainargs, 24
.import __argc, __argv
;---------------------------------------------------------------------------
; Get possible command-line arguments. Goes into the special INIT segment,
; which may be reused after the startup code is run
.segment "INIT"
.proc initmainargs
rts
.endproc

68
libsrc/creativision/psg.s Normal file
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; void __fastcall__ psg_outb( unsigned char b );
; void __fastcall__ psg_delayms( unsigned char c);
; void __fastcall__ bios_playsound( void *b, unsigned char c);
; void psg_silence( void );
.export _psg_outb, _psg_silence, _psg_delay
.export _bios_playsound
.import popa
.include "creativision.inc"
_psg_outb:
;* Let BIOS output the value
jmp $FE77
_psg_silence:
jmp $FE54
_psg_delay:
tay
l1:
lda #200
l2:
sbc #1
bne l2
lda #200
l3:
sbc #1
bne l3
dey
bne l1
rts
;* Creativision Sound Player
;*
;* Based on BIOS sound player.
;* Pass a pointer to a set of note triples, terminated with a tempo byte
;* and the len (max 255)
_bios_playsound:
pha ; Save Length Byte
sei
lda #$D5 ; BIOS volume table low
sta $4
lda #$FC ; BIOS volume table high
sta $5
jsr popa ; Get Sound table pointer low
sta $0
jsr popa ; Get Sound table pointer high
sta $1
pla
tay ; Put length in Y
dey
php
jmp $fbed ; Let BIOS do it's thing

36
libsrc/creativision/setcursor.s Normal file
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;
; Written by Groepaz/Hitmen <groepaz@gmx.net>
; Cleanup by Ullrich von Bassewitz <uz@cc65.org>
;
; Set the cursor position
.export setcursor
.include "creativision.inc"
;-----------------------------------------------------------------------------
.proc setcursor
tya
clc
adc addrlo,x
sta SCREEN_PTR
lda addrhi,x
adc #0
sta SCREEN_PTR+1
rts
.endproc
;-----------------------------------------------------------------------------
; Tables with screen addresses
addrlo: .repeat SCREEN_ROWS,line
.byte <($1000+(line*SCREEN_COLS))
.endrepeat
addrhi: .repeat SCREEN_ROWS,line
.byte >($1000+(line*SCREEN_COLS))
.endrepeat

39
libsrc/creativision/sysuname.s Normal file
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;
; Ullrich von Bassewitz, 2003-08-12
;
; unsigned char __fastcall__ _sysuname (struct utsname* buf);
;
.export __sysuname, utsdata
.import utscopy
__sysuname = utscopy
;--------------------------------------------------------------------------
; Data. We define a fixed utsname struct here and just copy it.
.rodata
utsdata:
; sysname
.asciiz "cc65"
; nodename
.asciiz ""
; release
.byte ((.VERSION >> 8) & $0F) + '0'
.byte '.'
.byte ((.VERSION >> 4) & $0F) + '0'
.byte $00
; version
.byte (.VERSION & $0F) + '0'
.byte $00
; machine
.asciiz "CREATIVISION"

19
libsrc/creativision/wherex.s Normal file
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;
; Ullrich von Bassewitz, 2003-05-02
;
; unsigned char wherex (void);
;
.export _wherex
.include "creativision.inc"
.proc _wherex
lda CURSOR_X
ldx #$00
rts
.endproc

19
libsrc/creativision/wherey.s Normal file
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;
; Ullrich von Bassewitz, 2003-05-02
;
; unsigned char wherey (void);
;
.export _wherey
.include "creativision.inc"
.proc _wherey
lda CURSOR_Y
ldx #$00
rts
.endproc