Search found 148 matches
- Thu Nov 17, 2011 1:30 pm
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
- Thu Nov 17, 2011 1:24 pm
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
- Wed Nov 16, 2011 2:14 pm
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
- Wed Nov 16, 2011 10:07 am
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
- Tue Nov 15, 2011 6:03 pm
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
the bus problem is caused by poor smoothing of the 5v supply and the fact that the oric uses a 7905 negative regulator. if the electrolytic caps are good - as in *not* 25+ years old, and your interface does not use an external supply there are no problems - i used to build loads of memory mapped int...
- Tue Nov 15, 2011 4:06 pm
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
there is no problem interfacing with an 8bit bus, the only time you get problems is if your project is 3.3 or 1.8v such as modern FPGA's because the oric is 5v. however, some FPGA's have 5v compliant i/o and another solution is to use buffers. forget loading tap files - the oric wouldnt know what to...
- Tue Nov 15, 2011 10:22 am
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
- Tue Nov 15, 2011 10:18 am
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
the biggest problem is using ROMDIS to put external code into the upper memory area, i'd be very surprised if you could find a single game that didnt use rom routines, and trying to flip between an external rom and the original on a running system isnt easy without causing a crash. the other option ...
- Mon Nov 14, 2011 1:42 pm
- Forum: Hardware hacks and extensions
- Topic: Cartridge Device for Oric
- Replies: 42
- Views: 52630
- Sun Nov 13, 2011 5:17 am
- Forum: Hardware hacks and extensions
- Topic: Idea - Tape Deck Emulator / SD-Card
- Replies: 8
- Views: 13627
- Mon Oct 31, 2011 1:53 am
- Forum: General Discussion
- Topic: Found many many Ballpoint pens for MCP40 !!!!!!!!!!!!! ;)
- Replies: 4
- Views: 10969
- Fri Oct 07, 2011 9:00 pm
- Forum: Hardware hacks and extensions
- Topic: What is this? A multi-plexer for Telestrat/Oric network?
- Replies: 23
- Views: 30063
- Wed Sep 21, 2011 7:56 pm
- Forum: Technical questions
- Topic: DATASHEET HCS 3119 AND 3120
- Replies: 14
- Views: 18237
- Tue Aug 30, 2011 7:05 pm
- Forum: General Discussion
- Topic: 16k Oric-1
- Replies: 6
- Views: 9739
- Sun Aug 21, 2011 6:29 am
- Forum: Technical questions
- Topic: 1st instruction on boot ?
- Replies: 9
- Views: 13828