Search found 37 matches
- Wed May 29, 2013 8:41 pm
- Forum: General Discussion
- Topic: RIP Twilighte
- Replies: 39
- Views: 41305
Re: RIP Twilighte
RIP Jonathan.
- Sun Aug 19, 2012 8:27 pm
- Forum: Hardware hacks and extensions
- Topic: Simplest MMC Interface hardware
- Replies: 63
- Views: 88980
Re: Simplest MMC Interface hardware
it may be a problem using fram, i think ramtron may be discontinuing 5v parts! :( gonna check this and also a slightly inferior alternative. Please, if you find an alternative to the Ramtron chips, even in 3.3V or less, please let me know ;) Anyway, if you're looking for a "second eye" to...
- Wed Aug 08, 2012 9:52 am
- Forum: Hardware hacks and extensions
- Topic: Simplest MMC Interface hardware
- Replies: 63
- Views: 88980
Re: Simplest MMC Interface hardware
32k of ram - you mean as 2 banks for o.s.? i keep getting confused about why anybody wants a ram chip. and the mcu cant write an o.s. image without sitting on the whole address & data busses - that's gonna eat up all my i/o i'd rather have the expansion rom just written from the oric side. Well...
- Tue Aug 07, 2012 9:49 pm
- Forum: Hardware hacks and extensions
- Topic: Simplest MMC Interface hardware
- Replies: 63
- Views: 88980
Re: Simplest MMC Interface hardware
Well, I'm not sure to understand all what you mean, and it seems to me that's you're ditching away some critical stuff about the Oric expansion bus and signals, but well, I may be wrong, or too pessimistic. However, if you haven't done it already, please have a look at Retromaster's Cumulus-related ...
- Mon Aug 06, 2012 10:00 pm
- Forum: Hardware hacks and extensions
- Topic: Simplest MMC Interface hardware
- Replies: 63
- Views: 88980
Re: Simplest MMC Interface hardware
Using page 3 would be much easier, all you have to do is handle "IO" and "IO control" signals to disable the VIA. Using page 0 would require to properly handle the MAP signal, which is much more difficult as its timing is picky. On Microdisc for instance, you had to adjust a vari...
- Sat Aug 04, 2012 1:44 pm
- Forum: Hardware hacks and extensions
- Topic: Simplest MMC Interface hardware
- Replies: 63
- Views: 88980
Re: Simplest MMC Interface hardware
no buss issues should happen, the iric is 1Mhz, the micro is 20Mhz - it can slave the buss and wait for the clocks. and as it can run down to about 2.7v weak signals shouldnt be an issue - although that shouldnt happen unless to have a 6inch ribbon cable anyway! I think you're a bit optimistic ther...
- Sun Feb 05, 2012 9:34 pm
- Forum: General Discussion
- Topic: Welcome to forum.defence-force.org 2.0
- Replies: 29
- Views: 31941
Re: Welcome to forum.defence-force.org 2.0
First test post on the new forum.
Everything looks fine so far
Everything looks fine so far
- Sun Mar 27, 2011 4:19 pm
- Forum: Hardware hacks and extensions
- Topic: Microdisc replacement project
- Replies: 183
- Views: 196751
Well, my Oric project would need a full rewrite ;) Maybe some day... I've played a bit with the 6502 core of the FPGA64 project ( http://www.syntiac.com/fpga64.html ), and it would be perfect for this task. I agree that a FPGA-based handhled would be great, as there are many FPGA cores available now...
- Wed Dec 01, 2010 5:57 pm
- Forum: Hardware hacks and extensions
- Topic: getting (PAL) composite signal from the ORIC
- Replies: 10
- Views: 21706
You can take a cheaper route with a more modern AD724 for instance.
http://www.analog.com/en/digital-to-ana ... oduct.html.
Runs on 5V.
http://www.analog.com/en/digital-to-ana ... oduct.html.
Runs on 5V.
- Mon Nov 15, 2010 10:02 pm
- Forum: Hardware hacks and extensions
- Topic: Microdisc replacement project
- Replies: 183
- Views: 196751
- Sat Nov 13, 2010 3:36 pm
- Forum: Hardware hacks and extensions
- Topic: Microdisc replacement project
- Replies: 183
- Views: 196751
Microdisc replacement project
Is anyone aware of this project ?
http://retromaster.wordpress.com/.
I had the same idea while discussing with Fabrice last month... Well this project is more advanced than what I've done myself on this topic
http://retromaster.wordpress.com/.
I had the same idea while discussing with Fabrice last month... Well this project is more advanced than what I've done myself on this topic
- Sat Oct 02, 2010 11:48 am
- Forum: Hardware hacks and extensions
- Topic: Idea - Tape Deck Emulator / SD-Card
- Replies: 8
- Views: 13627
Idea - Tape Deck Emulator / SD-Card
I had an idea this morning (well, to be honest I somewhat "stoled" it from DBug during an IRC chat session ;)) : build a Tape Deck Emulator (TDE for short) based on a microcontroller (MCU). Basically, the MCU would be connected to Oric's tape connector, and read .TAP files from a SD-Card, ...
- Wed Jul 21, 2010 7:23 am
- Forum: General Discussion
- Topic: comp.sys.oric - Oric Telestrat + many components
- Replies: 5
- Views: 8478
- Wed Jul 21, 2010 7:19 am
- Forum: Hardware hacks and extensions
- Topic: HxC SD Card floppy disk emulator - works with Oric?
- Replies: 5
- Views: 9865
- Fri Jul 24, 2009 1:08 pm
- Forum: Hardware hacks and extensions
- Topic: Oric -on-a-chip
- Replies: 9
- Views: 16217