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Remove recipes/rc2014/zasm

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That becomes irrelevant in Forth
This commit is contained in:
Virgil Dupras 2020-04-24 10:59:28 -04:00
parent 44403c3d4c
commit f19a5e1f71
6 changed files with 0 additions and 325 deletions
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2
recipes/rc2014/zasm/.gitignore vendored
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/cfsin/zasm
/cfsin/user.h

30
recipes/rc2014/zasm/Makefile
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SHELLAPPS = zasm sdct memt at28w
APPTARGETS = ${SHELLAPPS:%=cfsin/%}
CFSTARGETS = $(APPTARGETS) cfsin/user.h
BASEDIR = ../../..
ZASM = $(BASEDIR)/emul/zasm/zasm
KERNEL = $(BASEDIR)/kernel
APPS = $(BASEDIR)/apps
CFSPACK = $(BASEDIR)/tools/cfspack/cfspack
.PHONY: all
all: os.bin sdcard.cfs
os.bin: glue.asm
$(ZASM) $(KERNEL) $(APPS) < glue.asm > $@
$(CFSPACK):
make -C $(BASEDIR)/tools/cfspack
sdcard.cfs: $(CFSTARGETS) $(CFSPACK)
$(CFSPACK) cfsin > $@
$(APPTARGETS): $(ZASMBIN)
$(ZASM) $(KERNEL) $(APPS) user.h < $(APPS)/${@:cfsin/%=%}/glue.asm > $@
cfsin/user.h: user.h
cp user.h $@
.PHONY: clean
clean:
rm -f $(CFSTARGETS) sdcard.cfs os.bin

109
recipes/rc2014/zasm/README.md
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# Assembling binaries
For a system to be able to self-reproduce, it needs to assemble source z80
assembly to binary.
## Goals
Have a RC2014 assemble a Collapse OS kernel with its source living on a CFS on
a SD card.
## Gathering parts
* Same parts as the [SD card recipe](../sdcard).
## The zasm binary
To achieve our goal in this recipe, we'll need a zasm binary on the SD card.
This zasm binary needs to be compiled with the right jump offsets for the kernel
we build in this recipe. These offsets are in `user.h` and are closely in sync
with the configuration in `glue.asm`.
`user.h` is then included in `apps/zasm/glue.asm`.
The makefile in this recipe takes care of compiling zasm with the proper
`user.h` file and place it in `cfsin/zasm`
## The userland source
The code we're going to compile is `cfsin/hello.asm`. As you can see, we also
include `user.h` in this source code or else `ld hl, sAwesome` would load the
wrong offset.
Because of this, the Makefile takes care of copying `user.h` in our filesystem.
## Preparing the card and kernel
After running `make`, you'll end up with `sdcard.cfs` which you can load the
same way you did in the SD card recipe.
You will also have `os.bin`, which you can flash on your EEPROM the same way
you already did before.
## Running it
Compiling and running `hello.asm` is done very much like in
[the shell emulator](../../../doc/zasm.md):
Collapse OS
> sdci
> fson
> fopen 0 hello.asm
> fnew 1 dest
> fopen 1 dest
> zasm 1 2
> dest
Assembled from a RC2014
>
That RC2014 is starting to feel powerful now, right?
## Test your hardware
Now that you have a fully functional filesystem that can load programs and run
them easily, you'll see that this recipe's CFS include a couple of programs
besides `zasm`. Among them, there's `sdct` that stress tests reading and
writing on the SD card and `memt` that stress tests RAM. You might be
interested in running them. Look at their description in `apps/`. All you need
to to do run them is to type their name.
## Assembling the kernel
Now let's go for something a little more fun! Jiu-jitsu? No, you're not going to
learn jiu-jitsu! You're going to assemble the kernel from within your RC2014!
The makefile doesn't prepare a CFS blob for this, let's learn to build that blob
yourself. First of all, we'll need to have what we already had in `sdcard.cfs`
because it has `zasm` and `user.h`. But we're going to add the contents of
the `/kernel/` directory to it.
$ cp ../../../kernel/*.{h,asm} cfsin
You'll also need your glue file:
$ cp glue.asm cfsin
You're now ready to re-make your CFS:
$ rm sdcard.cfs && make
Now you can write this into your card and boot Collapse OS:
Collapse OS
> sdci
> fson
> fopn 0 glue.asm
> fnew 10 dest
> fopen 1 dest
> zasm 1 2 # This takes a while. About 7 minutes.
> sdcf # success! sdcf flushes SD card buffers to the card.
Now let's go verify that we assembled the right thing. Pop out the card and
plug it in your "modern" computer. Pipe the device directly through `cfsunpack`
to unpack the FS into a directory (it will stop reading when it stops seeing
CFS blocks):
$ sudo cat /dev/sdX | ../../../tools/cfspack/cfsunpack cfsout
$ cmp cfsout/dest ../os.bin
They're the same! Your RC2014 assembled a full Collapse OS kernel all by itself!

10
recipes/rc2014/zasm/cfsin/hello.asm
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.inc "user.h"
ld hl, sAwesome
call printstr
xor a ; success
ret
sAwesome:
.db "Assembled from a RC2014", 0x0d, 0x0a, 0

151
recipes/rc2014/zasm/glue.asm
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; 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
; Kernel RAMEND last check: 0x9933
; We allocate at least 0x100 bytes for the stack, which is why we have this
; threshold.
.equ RAMEND 0x9b00
.equ USER_CODE RAMEND ; in sync with user.h
.equ ACIA_CTL 0x80 ; Control and status. RS off.
.equ ACIA_IO 0x81 ; Transmit. RS on.
jp init ; 3 bytes
; *** Jump Table ***
jp strncmp
jp upcase
jp findchar
jp blkSel
jp blkSet
jp fsFindFN
jp fsOpen
jp fsGetB
jp printstr
jp printcrlf
jp _blkGetB
jp _blkPutB
jp _blkSeek
jp _blkTell
jp sdcGetB
jp sdcPutB
jp blkGetB
; interrupt hook
.fill 0x38-$
jp aciaInt
; *** cont. ***
jp stdioPutC
.inc "err.h"
.inc "ascii.h"
.inc "blkdev.h"
.inc "fs.h"
.inc "core.asm"
.inc "str.asm"
.equ ACIA_RAMSTART RAMSTART
.inc "acia.asm"
.equ BLOCKDEV_RAMSTART ACIA_RAMEND
.equ BLOCKDEV_COUNT 4
.inc "blockdev.asm"
; List of devices
.dw sdcGetB, sdcPutB
.dw blk1GetB, blk1PutB
.dw blk2GetB, blk2PutB
.dw mmapGetB, mmapPutB
.equ MMAP_START 0xe000
.inc "mmap.asm"
.equ STDIO_RAMSTART BLOCKDEV_RAMEND
.equ STDIO_GETC aciaGetC
.equ STDIO_PUTC aciaPutC
.inc "stdio.asm"
.equ FS_RAMSTART STDIO_RAMEND
.equ FS_HANDLE_COUNT 2
.inc "fs.asm"
; *** BASIC ***
; RAM space used in different routines for short term processing.
.equ SCRATCHPAD_SIZE STDIO_BUFSIZE
.equ SCRATCHPAD FS_RAMEND
.inc "lib/util.asm"
.inc "lib/ari.asm"
.inc "lib/parse.asm"
.inc "lib/fmt.asm"
.equ EXPR_PARSE parseLiteralOrVar
.inc "lib/expr.asm"
.inc "basic/util.asm"
.inc "basic/parse.asm"
.inc "basic/tok.asm"
.equ VAR_RAMSTART SCRATCHPAD+SCRATCHPAD_SIZE
.inc "basic/var.asm"
.equ BUF_RAMSTART VAR_RAMEND
.inc "basic/buf.asm"
.inc "basic/blk.asm"
.inc "basic/sdc.asm"
.equ BFS_RAMSTART BUF_RAMEND
.inc "basic/fs.asm"
.equ BAS_RAMSTART BFS_RAMEND
.inc "basic/main.asm"
.equ SDC_RAMSTART BAS_RAMEND
.equ SDC_PORT_CSHIGH 6
.equ SDC_PORT_CSLOW 5
.equ SDC_PORT_SPI 4
.inc "sdc.asm"
.out SDC_RAMEND
init:
di
ld sp, RAMEND
im 1
call aciaInit
call fsInit
call basInit
ld hl, basFindCmdExtra
ld (BAS_FINDHOOK), hl
xor a
ld de, BLOCKDEV_SEL
call blkSel
ei
jp basStart
basFindCmdExtra:
ld hl, basFSCmds
call basFindCmd
ret z
ld hl, basBLKCmds
call basFindCmd
ret z
ld hl, basSDCCmds
call basFindCmd
ret z
jp basPgmHook
; *** blkdev 1: file handle 0 ***
blk1GetB:
ld ix, FS_HANDLES
jp fsGetB
blk1PutB:
ld ix, FS_HANDLES
jp fsPutB
; *** blkdev 2: file handle 1 ***
blk2GetB:
ld ix, FS_HANDLES+FS_HANDLE_SIZE
jp fsGetB
blk2PutB:
ld ix, FS_HANDLES+FS_HANDLE_SIZE
jp fsPutB

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recipes/rc2014/zasm/user.h
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.org 0x9b00
; *** JUMP TABLE ***
.equ strncmp 0x03
.equ upcase @+3
.equ findchar @+3
.equ blkSel @+3
.equ blkSet @+3
.equ fsFindFN @+3
.equ fsOpen @+3
.equ fsGetB @+3
.equ printstr @+3
.equ printcrlf @+3
.equ _blkGetB @+3
.equ _blkPutB @+3
.equ _blkSeek @+3
.equ _blkTell @+3
.equ sdcGetB @+3
.equ sdcPutB @+3
.equ blkGetB @+3
; *** cont. ***
.equ stdioPutC 0x3b