Search found 10 matches

by DigitalDunc
Wed Jan 15, 2020 8:42 pm
Forum: Hardware hacks and extensions
Topic: I2C for the Oric
Replies: 47
Views: 8887

Re: I2C for the Oric

Of course you could use the printer port as an I2C interface. It’s worth pointing out that you _don’t_ need to replace the ROM image in any way to use it, though that does depend on how you plan to use your Oric. I would strongly recommend that you make the Oric the master not the slave however and ...
by DigitalDunc
Sat Jan 11, 2020 9:05 pm
Forum: Technical questions
Topic: New Oric Project. The OriClone-1
Replies: 9
Views: 2470

Re: New Oric Project. The OriClone-1

Well! You’re right of course, and I should really chuck it on github or suchlike. I didn’t give it enough thought on how I might generate engagement to spur the project along and add value to those that might have an interest. Pictures are a great idea. EDIT:- I’m going to set up a repo and come bac...
by DigitalDunc
Sat Jan 11, 2020 5:50 pm
Forum: Technical questions
Topic: New Oric Project. The OriClone-1
Replies: 9
Views: 2470

Re: New Oric Project. The OriClone-1

Whilst I haven't seen anybody reply, I did find some issues and further the schematic. I've made the updates available. Another couple of weeks and I might even have a working board. Did I just jinx myself?
by DigitalDunc
Fri Jan 10, 2020 6:12 pm
Forum: Technical questions
Topic: New Oric Project. The OriClone-1
Replies: 9
Views: 2470

Re: New Oric Project. The OriClone-1

I've made some progress, but of course, there are probably many faults in it. Anyway, I thought I'd share my progress with the community and ask that if you think I've made a mistake so far that you give me a heads-up! I have been giving some thought to the signal names and how the Oric busses parti...
by DigitalDunc
Fri Jan 10, 2020 4:40 pm
Forum: Audio tools
Topic: Speech
Replies: 15
Views: 25325

Re: Speech

I finished the reformatting of the memory file, although a couple of areas are a bit strange. The mc appears to use a few BRK instructions On the BBC micro they’re normally used to call a break handler. So basically memory is as follows:- BRK (first) Fault number Fault Message Null terminator I ref...
by DigitalDunc
Fri Jan 10, 2020 11:15 am
Forum: Operating systems, utilities and other serious software
Topic: ROM 1.22?
Replies: 16
Views: 3888

Re: ROM 1.22?

I already modified my Orics to take two ROMs in such a way as to retain drive compatibility, so that’s not an issue. I ought to improve the power on reset too but that’s no big deal and can wait. I have other irons in the fire right now. I’m just going to give it a go this weekend and see what happe...
by DigitalDunc
Fri Jan 10, 2020 8:47 am
Forum: Operating systems, utilities and other serious software
Topic: ROM 1.22?
Replies: 16
Views: 3888

Re: ROM 1.22?

I was under the impression that the ROM has been modified to operate with an emulators non standard keyboard and imagined there might therefore be incompatibilities with real hardware introduced.
by DigitalDunc
Fri Jan 10, 2020 8:08 am
Forum: Operating systems, utilities and other serious software
Topic: ROM 1.22?
Replies: 16
Views: 3888

Re: ROM 1.22?

Would there be many changes required to run these new ROM images on a real Oric? I’m aware the keyboard could be an issue.
by DigitalDunc
Sun Jan 05, 2020 7:38 pm
Forum: Technical questions
Topic: New Oric Project. The OriClone-1
Replies: 9
Views: 2470

Re: New Oric Project. The OriClone-1

Well, certainly I think switch mode is the way to go given how, um, warm the standard 7905 runs. Good call that! I was leaving the PSU section to nearer completion as I've been considering adding a few other goodies meaning I don't quite know what I'm going to want. A joystick port or two seems an a...
by DigitalDunc
Sun Jan 05, 2020 3:32 pm
Forum: Technical questions
Topic: New Oric Project. The OriClone-1
Replies: 9
Views: 2470

New Oric Project. The OriClone-1

Hello forum! Firstly, I'm newly joined up here and haven't messaged before so I apologise in advance for any fluff-ups I may make. Now, I've been playing around with Oric's since I was a nipper just last week decided to make myself a new one based roughly on Manoel Trapier's excellent schematic. I'm...