If it is linked with the system warming, I would look for capacitors which could start to fail, or simply it is one of the RAM chip which is starting to fail.
You should test these ORICes independently with a long memory test to check if there is no chip that is on the verge of failing
Search found 774 matches
- Fri Apr 19, 2019 8:27 pm
- Forum: Demos
- Topic: OricExos - making the impossible
- Replies: 156
- Views: 116031
- Sun Jun 03, 2018 5:09 pm
- Forum: Mags and books
- Topic: oric advanced user guide is still available
- Replies: 20
- Views: 39024
Re: oric advanced user guide is still available
I do have the book, but not the hardware to scan it properly :/ But I do know how to make a proper tool to do that, but miss a proper hackspace nearby :/ All is needed is some acrylic sheets, laser cutter, some hot air, a good DSLR and the proper software (and things to attach the DSLR) The actylic ...
- Sun Feb 25, 2018 5:59 pm
- Forum: 6502 assembly coding
- Topic: Identifying Oric-1
- Replies: 4
- Views: 13230
Re: Identifying Oric-1
Honestly I do think it is better to look at the ROM itself as this value is in RAM and can easily be changed
- Wed Oct 25, 2017 7:41 pm
- Forum: Hardware hacks and extensions
- Topic: Cumulus incompability solved, i think.
- Replies: 4
- Views: 8778
Re: Cumulus incompability solved, i think.
It may hide the problem for some people, or create new for other. Try and see but I can't promise that it will really fix for everyone. The real problem is in the CPLD, the code do a lot of things wrong, and we can't update the existing one in the field (nor I would recommend to be honest). [hr] Aft...
- Sun Aug 13, 2017 1:21 pm
- Forum: Technical questions
- Topic: Oric 1 display in North America
- Replies: 18
- Views: 23173
Re: Oric 1 display in North America
It is really time to have a proper Oric to VGA hardware, but my project todolist is already that big so don't expect it (from me) soon :/
- Fri Jul 21, 2017 2:03 am
- Forum: Technical questions
- Topic: Clock problems
- Replies: 3
- Views: 9268
Re: Clock problems
Phi2 have to be buffered, this is neither a TTL or a CMOS signal, but an unbuffered signal inside the 6502. By the way the original 6502 is using NMOS logic, which is neither CMOS not TTL and is in fact not completely compatible. I mean it compatible is or the Oric would not work at all, but the out...
- Sun Jul 16, 2017 2:06 pm
- Forum: Demos
- Topic: Line Feed - Oric MCP40 demo at Solskogen
- Replies: 15
- Views: 38962
Re: Line Feed - Oric MCP40 demo at Solskogen
Great!Dbug wrote: ↑Wed Jul 05, 2017 6:25 pm I got the small replacement plastic gears and the pens from http://www.best-electronics-ca.com
- Wed Jul 12, 2017 10:14 am
- Forum: Hardware hacks and extensions
- Topic: Cumulus Firware Compilation
- Replies: 136
- Views: 149457
Re: Cumulus Firware Compilation
Which would be useless as it would only work on theses cumuluses.
- Mon Jul 10, 2017 8:26 pm
- Forum: Hardware hacks and extensions
- Topic: Cumulus Firware Compilation
- Replies: 136
- Views: 149457
Re: Cumulus Firware Compilation
Of course, I'm not saying it would be hard
- Mon Jul 10, 2017 7:51 pm
- Forum: Technical questions
- Topic: How to install a 3" floppy drive on a modern pc?
- Replies: 15
- Views: 26325
Re: How to install a 3" floppy drive on a modern pc?
Well that would be an interesting project to make a proper USB-FDC that can handle any type of floppy and no fancy expensive thing like the KryoFlux. You will be able to make copy of a floppy dumped using it but I highly doubt from a DSK. Why not using an Oric with a microdisc and an HxC ? You load ...
- Mon Jul 10, 2017 7:46 pm
- Forum: Hardware hacks and extensions
- Topic: Cumulus Firware Compilation
- Replies: 136
- Views: 149457
Re: Cumulus Firware Compilation
The EEPROM contain only the microdisk ROM and nothing else. (which is on a legal point a view quite problematic to be honest)
- Wed Jun 21, 2017 11:02 pm
- Forum: Technical questions
- Topic: Compatible transister ?
- Replies: 5
- Views: 9539
Re: Compatible transister ?
I don't have an oric by hand, which transistor is this one?
I mean where is it located?
Is it TR2? (keyboard related one)
I mean where is it located?
Is it TR2? (keyboard related one)
- Mon Jun 19, 2017 9:01 pm
- Forum: Technical questions
- Topic: ORIC ULA on a CPLD ?
- Replies: 13
- Views: 19009
Re: ORIC ULA on a CPLD ?
Is he still alive? :S
- Mon Jun 19, 2017 8:57 pm
- Forum: Technical questions
- Topic: 65C02 CPU
- Replies: 3
- Views: 7155
Re: 65C02 CPU
I think it depends from where you 65C02 come from, the PIN differ a bit between manufacturer :/
- Mon Jun 19, 2017 8:54 pm
- Forum: Technical questions
- Topic: Transformer/ power supply
- Replies: 23
- Views: 30457
Re: Transformer/ power supply
Kenneth: you are right, I think it is that heat that kill my brain