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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
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.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"
Move ASCII consts to ascii.h And made them shorter in name. The new ascii.h file allow reuse in userspace code.
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.inc "ascii.h"
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
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.inc "core.asm"
Extract str.asm from core.asm and make core included by userspace Most of register fiddling routines (which is now the only thing contained in care.asm) are used by almost all userspace apps, often in inner loops. That makes the penalty of using jump tables for those a bit too high. Moreover, it burdens jump tables needlessly. Because this unit is very small (now that string routines are out), it makes sense to always include it in binaries.
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.inc "str.asm"
recipes/ti84: use a 3x5 font instead of a 5x7 one This allow a lot more characters to fit on that tiny screen... ref #41
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.equ FNT_WIDTH 3
.equ FNT_HEIGHT 5
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
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.inc "fnt/mgm.asm"
ti/lcd: add linefeed support There's no scrolling yet... ref #41
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.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
2019-11-07 11:52:29 -05:00
.inc "ti/lcd.asm"
ti/kbd: implement A-Lock ref #41
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.equ KBD_RAMSTART LCD_RAMEND
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
2019-11-07 11:52:29 -05:00
.inc "ti/kbd.asm"
ti/kbd: implement A-Lock ref #41
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.equ STDIO_RAMSTART KBD_RAMEND
ti/kbd: begin GetC implementation For now, only digits are scanned. Lifted from my "tiseg7" example. ref #41
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.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
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.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
recipes/ti84: use a 3x5 font instead of a 5x7 one This allow a lot more characters to fit on that tiny screen... ref #41
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im 1
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
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; 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:
ti/kbd: implement A-Lock ref #41
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call kbdInit
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
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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
recipes/ti84: use a 3x5 font instead of a 5x7 one This allow a lot more characters to fit on that tiny screen... ref #41
2019-11-11 13:24:50 -05:00
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
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.done:
pop af
ei
reti
FNT_DATA:
recipes/ti84: use a 3x5 font instead of a 5x7 one This allow a lot more characters to fit on that tiny screen... ref #41
2019-11-11 13:24:50 -05:00
.bin "fnt/3x5.bin"
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