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collapseos
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collapseos/recipes/ti84/glue.asm

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recipes/ti84: first step This was mostly lifted from my "tihello" example, but it required significant adjustments. This commit also introduces a font management system. A lot of fonts are available online, but sources aren't always clear so to avoid copyright landmines, I re-created my first 5x7 font from scratch. As it is now, this resulting ROM gets "Collapse OS>" to be displayed on the LCD screen. Much work still left to do. ref #41
2019-11-08 03:52:29 +11:00
.equ RAMSTART 0x8000
.equ RAMEND 0xbfff
.equ PORT_INT_MASK 0x03
.equ INT_MASK_ON 0x00
.equ PORT_INT_TRIG 0x04
.equ INT_TRIG_ON 0x00
.equ PORT_BANKB 0x07
jp boot
.fill 0x18-$
jp boot ; reboot
.fill 0x38-$
jp handleInterrupt
.fill 0x53-$
jp boot
; 0x0056
.db 0xFF, 0xA5, 0xFF
.fill 0x64-$
.inc "err.h"
.inc "core.asm"
.equ FNT_WIDTH 5
.equ FNT_HEIGHT 7
.inc "fnt/mgm.asm"
ti/lcd: add linefeed support There's no scrolling yet... ref #41
2019-11-08 12:52:09 +11:00
.equ LCD_RAMSTART RAMSTART
recipes/ti84: first step This was mostly lifted from my "tihello" example, but it required significant adjustments. This commit also introduces a font management system. A lot of fonts are available online, but sources aren't always clear so to avoid copyright landmines, I re-created my first 5x7 font from scratch. As it is now, this resulting ROM gets "Collapse OS>" to be displayed on the LCD screen. Much work still left to do. ref #41
2019-11-08 03:52:29 +11:00
.inc "ti/lcd.asm"
.inc "ti/kbd.asm"
ti/lcd: add linefeed support There's no scrolling yet... ref #41
2019-11-08 12:52:09 +11:00
.equ STDIO_RAMSTART LCD_RAMEND
ti/kbd: begin GetC implementation For now, only digits are scanned. Lifted from my "tiseg7" example. ref #41
2019-11-09 06:04:56 +11:00
.equ STDIO_GETC kbdGetC
recipes/ti84: first step This was mostly lifted from my "tihello" example, but it required significant adjustments. This commit also introduces a font management system. A lot of fonts are available online, but sources aren't always clear so to avoid copyright landmines, I re-created my first 5x7 font from scratch. As it is now, this resulting ROM gets "Collapse OS>" to be displayed on the LCD screen. Much work still left to do. ref #41
2019-11-08 03:52:29 +11:00
.equ STDIO_PUTC lcdPutC
.inc "stdio.asm"
.inc "parse.asm"
.equ SHELL_RAMSTART STDIO_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 0
.inc "shell.asm"
boot:
di
ld hl, RAMEND
ld sp, hl
im 1
; enable ON key interrupt
in a, (PORT_INT_MASK)
set INT_MASK_ON, a
out (PORT_INT_MASK), a
ld a, 0x80
out (PORT_BANKB), a
ei
call lcdOff
; sleep until we press ON
halt
main:
call lcdInit
xor a
call lcdSetCol
call shellInit
jp shellLoop
handleInterrupt:
di
push af
; did we push the ON button?
in a, (PORT_INT_TRIG)
bit INT_TRIG_ON, a
jp z, .done ; no? we're done
; yes? acknowledge and boot
in a, (PORT_INT_MASK)
res INT_MASK_ON, a ; acknowledge interrupt
out (PORT_INT_MASK), a
pop af
ei
jp main
.done:
pop af
ei
reti
FNT_DATA:
.bin "fnt/5x7.bin"