mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-08 16:48:06 +11:00
019d05f64c
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.
80 lines
1.3 KiB
NASM
80 lines
1.3 KiB
NASM
; 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
|
|
|
|
.inc "err.h"
|
|
.inc "ascii.h"
|
|
.inc "blkdev.h"
|
|
.inc "core.asm"
|
|
.inc "str.asm"
|
|
.equ ACIA_RAMSTART RAMSTART
|
|
.inc "acia.asm"
|
|
|
|
.equ MMAP_START 0xd000
|
|
.inc "mmap.asm"
|
|
|
|
.equ BLOCKDEV_RAMSTART ACIA_RAMEND
|
|
.equ BLOCKDEV_COUNT 1
|
|
.inc "blockdev.asm"
|
|
; List of devices
|
|
.dw mmapGetB, mmapPutB
|
|
|
|
.equ STDIO_RAMSTART BLOCKDEV_RAMEND
|
|
.equ STDIO_GETC aciaGetC
|
|
.equ STDIO_PUTC aciaPutC
|
|
.inc "stdio.asm"
|
|
|
|
.equ AT28W_RAMSTART STDIO_RAMEND
|
|
.inc "at28w/main.asm"
|
|
|
|
; *** Shell ***
|
|
.inc "lib/util.asm"
|
|
.inc "lib/parse.asm"
|
|
.inc "lib/args.asm"
|
|
.inc "lib/stdio.asm"
|
|
.equ SHELL_RAMSTART AT28W_RAMEND
|
|
.equ SHELL_EXTRA_CMD_COUNT 5
|
|
.inc "shell/main.asm"
|
|
; Extra cmds
|
|
.dw a28wCmd
|
|
.dw blkBselCmd, blkSeekCmd, blkLoadCmd, blkSaveCmd
|
|
|
|
.inc "shell/blkdev.asm"
|
|
|
|
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:
|
|
.db "a28w", 0b011, 0b001, 0
|
|
ld a, (hl)
|
|
ld (AT28W_MAXBYTES), a
|
|
inc hl
|
|
ld a, (hl)
|
|
ld (AT28W_MAXBYTES+1), a
|
|
jp at28wInner
|
|
|
|
|