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Omnibus.
Posted: Sun Jun 14, 2020 5:38 pm
by Silicebit.
The schematic diagram of Omnibus is finished!!
- Omnibus schematic.
- OmniBus.png (43.62 KiB) Viewed 5588 times
Now, I must to design the PCB.
Re: Omnibus.
Posted: Sun Jun 14, 2020 6:08 pm
by Silicebit.
With Omnibus we’ll have to be more careful. For example, we can't plug the Microdisc controller and Erebus at a time, both devices have an EPROM and both put low level in the /ROMDIS line. Two EPROMS at a time will not work.
Re: Omnibus.
Posted: Sun Jun 14, 2020 6:19 pm
by kenneth
Nice project !
It could be interesting to put a diode for each connector on the i/ocontrol pin, that will avoid the level conflict. This will allow the interfaces to exploit its memory area on page 3, if the result is not convincing, we can provide a parallel bridge at each diode.
Re: Omnibus.
Posted: Mon Jun 15, 2020 6:35 am
by Badger
Now I would be interedted in 1 of these
Re: Omnibus.
Posted: Mon Jun 15, 2020 10:04 pm
by Silicebit.
kenneth wrote: ↑Sun Jun 14, 2020 6:19 pm
Nice project !
It could be interesting to put a diode for each connector on the i/ocontrol pin, that will avoid the level conflict. This will allow the interfaces to exploit its memory area on page 3, if the result is not convincing, we can provide a parallel bridge at each diode.
Feasible, but I must test it before.
Re: Omnibus.
Posted: Fri Jun 19, 2020 10:38 am
by Symoon
With all those extensions, it feels like you guys are building a desktop Oric.
Re: Omnibus.
Posted: Fri Jun 19, 2020 11:27 am
by Dbug
Symoon wrote: ↑Fri Jun 19, 2020 10:38 am
With all those extensions, it feels like you guys are building a desktop Oric.
Technically, it's more like making the Oric do what the Apple II had from the start: Slots for expansion boards inside the case
Re: Omnibus.
Posted: Sat Jun 20, 2020 1:10 pm
by Vyper68
Nice work there Silicebit
When it comes round to a waitlist or production I definitely want one of these.