IBM 5150 BIOS Replacement - MCM68766 EPROM

Description

Replacement BIOS ROM for IBM 5150 (both motherboard types).
Contains the third version IBM BIOS from 10/27/82 - IBM Part Number 1501476.
I can program an older version, a diagnostic ROM, or a totally different image file if you wish, or provide it blank.
These are desirable chips, because they are pin-compatible (no adapter needed) with the old Mostek MK36000 mask ROMs, and the 2364 type ROMs used in IBM 5150, Commodore 64, VIC-20, 1541, Sinclair ZX80/81.
I also have dozens of other types of ROM I can provide programmed. Just inquire.
I can combine shipping with other items.
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eBay doesn't allow custom shipping service names.
"Economy"
will be
tracked airmail
to most countries, but untracked to a few more remote ones.
1-2 weeks usually
,
but can take longer.
"Expedited"
will be
DHL Express. 3-4 days usually.
Exact quotes vary depending on the country.
I can refund if you are overcharged.