History

Virgil Dupras fa28d64278 zasm: change ioRewind to ioSeek Will need it soon.		2019-05-15 13:41:56 -04:00
..
libz80@8a1f935daa	Add tools/emul	2019-05-09 12:58:41 -04:00
.gitignore	tools/emul/shell: add filesystem support	2019-05-12 11:20:31 -04:00
Makefile	tools/emul/shell: add filesystem support	2019-05-12 11:20:31 -04:00
README.md	Add tools/emul	2019-05-09 12:58:41 -04:00
bin2c.sh	Add tools/emul	2019-05-09 12:58:41 -04:00
shell.c	tools/emul/shell: fix srong SeekL return value	2019-05-12 14:32:24 -04:00
shell_.asm	parts/z80/fs: add "fopn" command	2019-05-12 15:38:58 -04:00
zasm.c	zasm: change ioRewind to ioSeek	2019-05-15 13:41:56 -04:00
zasm_glue.asm	zasm: change ioRewind to ioSeek	2019-05-15 13:41:56 -04:00
zasm_user.asm	zasm: add support for relative labels	2019-05-12 22:07:21 -04:00

README.md

emul

This is an emulator for a virtual machine that is suitable for running Collapse OS. The goal of this machine is not to emulate real hardware, but rather to serve as a development platform. What we do here is we emulate the z80 part, the 64K memory space and then hook some fake I/Os to stdin, stdout and a small storage device that is suitable for Collapse OS's filesystem to run on.

Through that, it becomes easier to develop userspace applications for Collapse OS.

We don't try to emulate real hardware to ease the development of device drivers because so far, I don't see the advantage of emulation versus running code on the real thing.

Usage

First, make sure that the libz80 git submodule is checked out. If not, run git submodule init && git submodule update.

The Makefile in this folder has multiple targets that all use libz80 as its core. For example, make shell will build ./shell, a vanilla Collapse OS shell. make zasm will build a ./zasm executable, and so on.

See documentation is corresponding source files for usage documentation of each target.