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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.
48 lines
737 B
NASM
48 lines
737 B
NASM
.equ RAMSTART 0x8000
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.equ RAMEND 0xffff
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.equ ACIA_CTL 0x80 ; Control and status. RS off.
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.equ ACIA_IO 0x81 ; Transmit. RS on.
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.equ KBD_PORT 0x08
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jp init
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.inc "err.h"
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.inc "ascii.h"
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.inc "core.asm"
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.inc "str.asm"
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.equ ACIA_RAMSTART RAMSTART
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.inc "acia.asm"
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.equ KBD_RAMSTART ACIA_RAMEND
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.inc "kbd.asm"
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.equ STDIO_RAMSTART KBD_RAMEND
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.equ STDIO_GETC kbdGetC
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.equ STDIO_PUTC aciaPutC
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.inc "stdio.asm"
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; *** Shell ***
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.inc "lib/util.asm"
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.inc "lib/parse.asm"
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.inc "lib/args.asm"
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.inc "lib/stdio.asm"
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.equ SHELL_RAMSTART STDIO_RAMEND
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.equ SHELL_EXTRA_CMD_COUNT 0
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.inc "shell/main.asm"
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init:
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di
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; setup stack
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ld hl, RAMEND
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ld sp, hl
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call aciaInit
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call kbdInit
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call shellInit
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jp shellLoop
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KBD_FETCHKC:
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in a, (KBD_PORT)
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ret
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