Mainboard 81-240: Difference between revisions
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| #17083 || 53883 || M-681? || 81-232 || 81-146 || FrankenKaypro?<br>Shield | | #17083 || 53883 || M-681? || 81-232 || 81-146 || FrankenKaypro?<br>Shield | ||
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| #76797 || 21658 || NLS FT 51? || 81-232A || 81-146A || Shield<br>'''KII''' 81-003 | |||
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| #102622 || 20433 || 162-W || 81-232 || 81-146A || Shield<br>'''KII''' 81-003 | | #102622 || 20433 || 162-W || 81-232 || 81-146A || Shield<br>'''KII''' 81-003 | ||
Revision as of 10:37, 11 October 2025
81-240 General Info
The 81-240 Mainboard was used for both the Kaypro II '83 and Kaypro 4 '83 machines. According to reports it detected if it was reading a single or double sided drive and would continue to function based on that data.
The previous board for the Kaypro II was the 81-110.
The universal board would replace it for the K2 '84 and K4 '84.
81-240A Machines
| Serial Num | Board Num | QC Sticker | Monitor ROM | Char ROM | Notes |
|---|---|---|---|---|---|
| #16679 | 30484 | none | 81-232 | 81-146 | Likely a FrankenKaypro due to multiple parts from multiple eras. Shield |
| #17083 | 53883 | M-681? | 81-232 | 81-146 | FrankenKaypro? Shield |
| #76797 | 21658 | NLS FT 51? | 81-232A | 81-146A | Shield KII 81-003 |
| #102622 | 20433 | 162-W | 81-232 | 81-146A | Shield KII 81-003 |