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display.tv.text.spin
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{
--------------------------------------------
Filename: display.tv.text.spin
Author: Jesse Burt
Description: 40x13 text composite TV driver
Started 2006
Updated Oct 25, 2022
See end of file for terms of use.
--------------------------------------------
NOTE: This is based on tv_text.spin,
originally by Chip Gracey
}
CON
COLS = 40
ROWS = 13
SCREENSIZE = COLS * ROWS
LASTROW = SCREENSIZE - COLS
TV_COUNT = 14
VAR
long _col, _row, _color, _flag
word _screen[SCREENSIZE]
long _colors[8 * 2]
long tv_status '0/1/2 = off/invisible/visible read-only (14 longs)
long tv_enable '0/non-0 = off/on write-only
long tv_pins '%pppmmmm = pin group, pin group mode write-only
long tv_mode '%tccip = tile,chroma,interlace,ntsc/pal write-only
long tv_screen 'pointer to screen (words) write-only
long tv_colors 'pointer to colors (longs) write-only
long tv_ht 'horizontal tiles write-only
long tv_vt 'vertical tiles write-only
long tv_hx 'horizontal tile expansion write-only
long tv_vx 'vertical tile expansion write-only
long tv_ho 'horizontal offset write-only
long tv_vo 'vertical offset write-only
long tv_broadcast 'broadcast frequency (Hz) write-only
long tv_auralcog 'aural fm cog write-only
OBJ
tv : "display.tv"
PUB start(basepin): okay
' Start terminal - starts a cog
' returns false if no cog available
setcolors(@palette)
char(0)
longmove(@tv_status, @tv_params, TV_COUNT)
tv_pins := (basepin & %111000) << 1 | (basepin & 4 == 4) & %0101
tv_screen := @_screen
tv_colors := @_colors
okay := tv.start(@tv_status)
PUB stop
' Stop terminal - frees a cog
tv.stop
{ normally terminal.common.spinh provides newline(), but tell it we brought our own }
#define _HAS_NEWLINE_
PUB newline
putchar($0d)
PUB tx = putchar
PUB char = putchar
PUB putchar(c) | i, k
' Output a character
'
' $00 = clear screen
' $01 = home
' $08 = backspace
' $09 = tab (8 spaces per)
' $0A = set X position (X follows)
' $0B = set Y position (Y follows)
' $0C = set color (color follows)
' $0D = return
' others = printable characters
case _flag
$00:
case c
$00:
wordfill(@_screen, $220, SCREENSIZE)
_col := _row := 0
$01:
_col := _row := 0
$08:
if (_col)
_col--
$09:
repeat
print(" ")
while _col & 7
$0A..$0C:
_flag := c
return
$0D:
_col := 0
if (++_row == ROWS)
_row--
wordmove(@_screen, @_screen[COLS], LASTROW) 'scroll lines
wordfill(@_screen[LASTROW], $220, COLS) 'clear new line
other:
print(c)
$0A: _col := (c // COLS)
$0B: _row := (c // ROWS)
$0C: _color := (c & 7)
_flag := 0
PUB position = pos_xy
PUB pos_xy(x, y)
' Set cursor position
putchar($0a)
putchar(x)
putchar($0b)
putchar(y)
PUB setcolors(colorptr) | i, fore, back
' Override default color palette
' colorptr must point to a list of up to 8 colors
' arranged as follows:
'
' fore back
' ------------
' palette byte color, color 'color 0
' byte color, color 'color 1
' byte color, color 'color 2
' ...
repeat i from 0 to 7
fore := byte[colorptr][i << 1]
back := byte[colorptr][i << 1 + 1]
_colors[i << 1] := fore << 24 + back << 16 + fore << 8 + back
_colors[i << 1 + 1] := fore << 24 + fore << 16 + back << 8 + back
PRI print(c)
_screen[_row * COLS + _col] := (_color << 1 + c & 1) << 10 + $200 + c & $FE
if (++_col == COLS) ' wrap around when reaching the screen right edge
newline
' pull in terminal lib methods (putbin(), putdec(), puthex(), printf(), puts(), etc)
#include "terminal.common.spinh"
DAT
tv_params long 0 'status
long 1 'enable
long 0 'pins
long %10010 'mode
long 0 'screen
long 0 'colors
long COLS 'hc
long ROWS 'vc
long 4 'hx
long 1 'vx
long 0 'ho
long 0 'vo
long 0 'broadcast
long 0 'auralcog
' fore back
' color color
palette byte $07, $0A '0 white / dark blue
byte $07, $BB '1 white / red
byte $9E, $9B '2 yellow / brown
byte $04, $07 '3 grey / white
byte $3D, $3B '4 cyan / dark cyan
byte $6B, $6E '5 green / gray-green
byte $BB, $CE '6 red / pink
byte $3C, $0A '7 cyan / blue
DAT
{
Permission is hereby granted, free of charge, to any person obtaining a copy of this software and
associated documentation files (the "Software"), to deal in the Software without restriction,
including without limitation the rights to use, copy, modify, merge, publish, distribute,
sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all copies or
substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT
NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT
OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
}