| ??? 11/20/11 23:00 Read: times |
#184839 - Unfortunately ... Responding to: ???'s previous message |
Those 8041/8042 chips are hard-coded ROM-based chips, hence won't do much, as, IIRC, they don't work with external memory.
The 8041 series was designed as peripheral chip, i.e. has a parallel bus interface. Some of Intel's original GPIB and other interface chips were really just masked-rom 8041/42's. What you MIGHT want is an 8741 ... of which I MAY still have one or two ... somewhere ... though I haven't seen 'em since my move a couple of years ago. These chips were interesting back in the day, because they functioned, in microcomputer-based systems, as peripheral chips, yet were programmable just as modern microcontrollers are today. Sadly, I'm not aware of any chips that can be interfaced in that way today, hence have to roll-my-own using programmable logic. RE |
| Topic | Author | Date |
| Sourcing historic uCs | 01/01/70 00:00 | |
| Vintage MCUs | 01/01/70 00:00 | |
| 8041 | 01/01/70 00:00 | |
| Unfortunately ... | 01/01/70 00:00 | |
| external execution in '41/'42 | 01/01/70 00:00 | |
| I don't doubt what you said ... | 01/01/70 00:00 | |
| Have some old 8748, 8749 and V20 chips | 01/01/70 00:00 | |
| I've got some other old MCU and MPU chips ... | 01/01/70 00:00 | |
| Can you program them | 01/01/70 00:00 | |
| Some of us have those ... even the programmables | 01/01/70 00:00 | |
| If I can find 'em ... | 01/01/70 00:00 | |
seems still live | 01/01/70 00:00 |