joemagiera
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I have these PROMs on my working boardset (in fact, they are Atari labeled chips):Not sure what I'm actually going to get from Mark, but if its the HM1-7643-5 listed itshould be ok.*Edit: even though the '-5' matches the original, its not the same speed.
| Chip Manufacturer | Chip | Manufacturer Listed Access Time |
| Texas Instruments | TBP24S41N | 40ns |
| Harris | M1-7643B-5 | 45ns |
They are within I, Robot specifications:
| Manual Specification | Manufacturer listed Access Time |
| 82HS137 PROM Integrated Circuit | 45ns (Signetics N82HS137) |






