https://github.com/biged/boot816

Support ROM for Beeb816 project
https://github.com/biged/boot816

Last synced: about 2 months ago
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Support ROM for Beeb816 project

• Host: GitHub
• URL: https://github.com/biged/boot816
• Owner: BigEd
• License: lgpl-3.0
• Created: 2016-06-01T18:35:58.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2021-05-24T19:43:29.000Z (over 3 years ago)
• Last Synced: 2024-10-15T20:23:48.621Z (3 months ago)
• Language: AngelScript
• Size: 252 KB
• Stars: 1
• Watchers: 4
• Forks: 1
• Open Issues: 2
• Metadata Files:
  • Readme: README.txt
  • License: LICENSE

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README

        
The boot816 project makes a ROM for a BBC micro

The ROM has several purposes

 - set serial redirect at boot time

 - *commands for detecting and testing 65816 hardware

The ROM source is boot816.as and the ROM can be built with

  make boot816.bin

or

  make

The ROM image can be tested in emulation using

  ../lib6502/run6502 -B -l c000 ../rom-images/OS12.ROM ../rom-images/BASIC2.ROM boot816.bin

or

  ../lib65816/run65816 -B -l c000 ../rom-images/OS12.ROM ../rom-images/BASIC2.ROM boot816.bin

There are some auxiliary files here too:

 - Makefile

 - srec2telnet  a utility including a BASIC srecord loader and a slowed-down serial port loader

 - irqhandler.as  a work-in-progress to provide an 816-mode IRQ handler which hands off to 6502-mode

 - memtest.as   a cut-down version of the memory test code from boot816, to load and run at 0x2000

     make -B memtest.srec BASE=0x2000

An srec can be piped slowly to a serial-connected beeb using something like

  perl -e ' \

     $|=1;while (<>) {select undef, undef, undef, 0.4; print $_."\r"}sleep(2)' | \

    telnet localhost 3000