CBM11 V0.1

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Downloads: 33
Released: Feb 8, 2011
Updated: Feb 9, 2011 by xlar54
Dev status: Alpha Help Icon

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Source Code CBM11-v0.1.0.0.zip
source code, 3170K, uploaded Feb 9, 2011 - 33 downloads

Release Notes

This is the first release of the CBM11 OS. It will boot to a ML monitor with the following instructions:

M XXXX - Display memory at location XXXX
M XXXX BB - Change memory at location XXXX to BB
S XXXX - Start execution at location XXXX in step mode. After the next instruction, just enter S alone to single step the next instruction
G XXXX - Go - Start execution until BRK
A XXXX opcode param - Assemble opcode to XXXX
F XXXX XXXX - Fill memory from 1st parm to 2nd param

Known issues:
  • Since Cosmos does not yet support filesystems, you are limited to in memory assembly - no load or save yet.
  • No disassembler
  • Some opcodes incomplete, notably Decimal mode opcodes like ADC. Top priority! (want to help?)

Note that this requires the Cosmos user kit to be installed in order to compile. I use VirtualBox for testing, which is not directly compatible with Cosmos, so the ISO will be in the release folder.

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