collapseos/recipes/sms/glue.asm
Virgil Dupras 019d05f64c 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.
2019-11-15 15:37:49 -05:00

49 lines
754 B
NASM

; 8K of onboard RAM
.equ RAMSTART 0xc000
; Memory register at the end of RAM. Must not overwrite
.equ RAMEND 0xfdd0
jp init
.fill 0x66-$
retn
.inc "err.h"
.inc "ascii.h"
.inc "core.asm"
.inc "str.asm"
.equ PAD_RAMSTART RAMSTART
.inc "sms/pad.asm"
.equ VDP_RAMSTART PAD_RAMEND
.inc "sms/vdp.asm"
.equ STDIO_RAMSTART VDP_RAMEND
.equ STDIO_GETC padGetC
.equ STDIO_PUTC vdpPutC
.inc "stdio.asm"
; *** Shell ***
.inc "lib/util.asm"
.inc "lib/parse.asm"
.inc "lib/args.asm"
.inc "lib/stdio.asm"
.equ SHELL_RAMSTART STDIO_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 0
.inc "shell/main.asm"
init:
di
im 1
ld sp, RAMEND
call padInit
call vdpInit
call shellInit
jp shellLoop
.fill 0x7ff0-$
.db "TMR SEGA", 0x00, 0x00, 0xfb, 0x68, 0x00, 0x00, 0x00, 0x4c