Added IBM 5550 IPL ROM#458
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Added an IPL ROM of IBM Japan Multistation 5550 (unknown sub model, but is probably 1st gen). I patched a few bytes to skip the timer (PIT) test that depend on the CPU speed. Info: http://adb.arcadeitalia.net/dettaglio_mame.php?game_name=ibm5550&search_id= https://github.com/martinlindhe/dos-software-decoding/tree/master/ibm-pc/ibm5550
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Which bytes were patched? |
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You can get the original rom file from the second link. |
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Add an IPL ROM of IBM Japan Multistation 5550 (unknown sub model, but is probably 1st gen). I patched a few bytes to skip the timer (PIT) and keyboard controller test that are strictly depend on the CPU speed.
Info:
http://adb.arcadeitalia.net/dettaglio_mame.php?game_name=ibm5550&search_id=
https://github.com/martinlindhe/dos-software-decoding/tree/master/ibm-pc/ibm5550
Checklist:
Your 86Box pull request:
86Box/86Box#6788