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collapseos/recipes/rc2014/eeprom/glue.asm

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NASM
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Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
; classic RC2014 setup (8K ROM + 32K RAM) and a stock Serial I/O module
; The RAM module is selected on A15, so it has the range 0x8000-0xffff
.equ RAMSTART 0x8000
.equ RAMEND 0xffff
.equ ACIA_CTL 0x80 ; Control and status. RS off.
.equ ACIA_IO 0x81 ; Transmit. RS on.
jp init
; interrupt hook
.fill 0x38-$
jp aciaInt
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.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.
2019-11-14 12:38:06 +11:00
.inc "ascii.h"
Make the shell a userspace app That's my mega-commit you've all been waiting for. The code for the shell share more routines with userspace apps than with kernel units, because, well, its behavior is that of a userspace app, not a device driver. This created a weird situation with libraries and jump tables. Some routine belonging to the `kernel/` directory felt weird there. And then comes `apps/basic`, which will likely share even more code with the shell. I was seeing myself creating huge jump tables to reuse code from the shell. It didn't feel right. Moreover, we'll probably want basic-like apps to optionnally replace the shell. So here I am with this huge change in the project structure. I didn't test all recipes on hardware yet, I will do later. I might have broken some... But now, the structure feels better and the line between what belongs to `kernel` and what belongs to `apps` feels clearer.
2019-11-16 07:37:49 +11:00
.inc "blkdev.h"
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.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.
2019-11-15 01:55:31 +11:00
.inc "str.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
.equ ACIA_RAMSTART RAMSTART
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.inc "acia.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
.equ MMAP_START 0xd000
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.inc "mmap.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
.equ BLOCKDEV_RAMSTART ACIA_RAMEND
.equ BLOCKDEV_COUNT 1
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.inc "blockdev.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
; List of devices
Rename blockdev's API routines to GetB/PutB The goal is to avoid mixing those routines with "character devices" (acia, vpd, kbd) which aren't block devices and have routines that have different expectations. This is a first step to fixing #64.
2019-10-31 07:59:35 +11:00
.dw mmapGetB, mmapPutB
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
.equ STDIO_RAMSTART BLOCKDEV_RAMEND
stdio: remove a layer of indirection in GetC/PutC We use zasm's ability to use labels in .equ directive. We didn't do it before because for a while, we were in between scas and zasm (scas was used in automated tests) so we needed to use the lowest common denominator: zasm doesn't have macros and scas can't use labels in .equ directives. This forced us to add this layer of indirection. But now that we are completely cut from scas' dependency, we can use this nice zasm's ability.
2019-11-05 01:55:12 +11:00
.equ STDIO_GETC aciaGetC
.equ STDIO_PUTC aciaPutC
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.inc "stdio.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
.equ AT28W_RAMSTART STDIO_RAMEND
zasm: rename #inc to .inc scas, it's not needed any more.
2019-10-07 05:32:23 +11:00
.inc "at28w/main.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
Make the shell a userspace app That's my mega-commit you've all been waiting for. The code for the shell share more routines with userspace apps than with kernel units, because, well, its behavior is that of a userspace app, not a device driver. This created a weird situation with libraries and jump tables. Some routine belonging to the `kernel/` directory felt weird there. And then comes `apps/basic`, which will likely share even more code with the shell. I was seeing myself creating huge jump tables to reuse code from the shell. It didn't feel right. Moreover, we'll probably want basic-like apps to optionnally replace the shell. So here I am with this huge change in the project structure. I didn't test all recipes on hardware yet, I will do later. I might have broken some... But now, the structure feels better and the line between what belongs to `kernel` and what belongs to `apps` feels clearer.
2019-11-16 07:37:49 +11:00
; *** Shell ***
.inc "lib/util.asm"
.inc "lib/parse.asm"
.inc "lib/args.asm"
.inc "lib/stdio.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
.equ SHELL_RAMSTART AT28W_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 5
Make the shell a userspace app That's my mega-commit you've all been waiting for. The code for the shell share more routines with userspace apps than with kernel units, because, well, its behavior is that of a userspace app, not a device driver. This created a weird situation with libraries and jump tables. Some routine belonging to the `kernel/` directory felt weird there. And then comes `apps/basic`, which will likely share even more code with the shell. I was seeing myself creating huge jump tables to reuse code from the shell. It didn't feel right. Moreover, we'll probably want basic-like apps to optionnally replace the shell. So here I am with this huge change in the project structure. I didn't test all recipes on hardware yet, I will do later. I might have broken some... But now, the structure feels better and the line between what belongs to `kernel` and what belongs to `apps` feels clearer.
2019-11-16 07:37:49 +11:00
.inc "shell/main.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
; Extra cmds
.dw a28wCmd
.dw blkBselCmd, blkSeekCmd, blkLoadCmd, blkSaveCmd
Make the shell a userspace app That's my mega-commit you've all been waiting for. The code for the shell share more routines with userspace apps than with kernel units, because, well, its behavior is that of a userspace app, not a device driver. This created a weird situation with libraries and jump tables. Some routine belonging to the `kernel/` directory felt weird there. And then comes `apps/basic`, which will likely share even more code with the shell. I was seeing myself creating huge jump tables to reuse code from the shell. It didn't feel right. Moreover, we'll probably want basic-like apps to optionnally replace the shell. So here I am with this huge change in the project structure. I didn't test all recipes on hardware yet, I will do later. I might have broken some... But now, the structure feels better and the line between what belongs to `kernel` and what belongs to `apps` feels clearer.
2019-11-16 07:37:49 +11:00
.inc "shell/blkdev.asm"
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
init:
di
; setup stack
ld hl, RAMEND
ld sp, hl
im 1
call aciaInit
call shellInit
xor a
ld de, BLOCKDEV_SEL
call blkSel
ei
jp shellLoop
a28wCmd:
recipes/rc2014/eeprom: fix broken a28w args passing That's why the command seemed slow! It's much faster than I thought.
2019-06-15 06:30:01 +10:00
.db "a28w", 0b011, 0b001, 0
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
ld a, (hl)
apps/at28w: fix argument byte order
2019-06-15 11:11:45 +10:00
ld (AT28W_MAXBYTES), a
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
inc hl
ld a, (hl)
apps/at28w: fix argument byte order
2019-06-15 11:11:45 +10:00
ld (AT28W_MAXBYTES+1), a
Add at28w app and recipe This allows us to write to an AT28 EEPROM from within collapse os.
2019-06-15 04:15:30 +10:00
jp at28wInner
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