Search found 10 matches

by harry66
Thu Mar 16, 2017 1:16 pm
Forum: Technical questions
Topic: ORIC ULA on a CPLD ?
Replies: 12
Views: 1890

Re: ORIC ULA on a CPLD ?

I'm still in the Design / feasibility stage of my 'Super' ORIC-1 design... but here's a basic Idea of the specification : Specification. 6502 CPU (5MHz Max) 48K SRAM 16K EPROM Graphics..CPLD givid Standard + 80x28 TEXT/Graphics, & 480 x200 Graphics possibly even 640x200 bitmapped with second CPLD (E...
by harry66
Mon Mar 13, 2017 3:49 pm
Forum: Technical questions
Topic: ORIC ULA on a CPLD ?
Replies: 12
Views: 1890

Re: ORIC ULA on a CPLD ?

It was just that I was wanting to either make my own ULA (Enhanced) using a CPLD probably EPM7512s or purchase/acquire a CPLD to act as ULA. This would then allow me to design my own homebrew ORIC-1 +
by harry66
Sat Mar 11, 2017 11:05 am
Forum: Technical questions
Topic: ORIC ULA on a CPLD ?
Replies: 12
Views: 1890

ORIC ULA on a CPLD ?

Hi.

I've heard someone is working on making a New ORIC ULA on a CPLD...?? Are these available to buy , what CPLD is used and is it true ? :?

Thanks
by harry66
Fri Mar 04, 2016 11:06 am
Forum: General Discussion
Topic: Silly Survey...just for fun.
Replies: 6
Views: 3581

Re: Silly Survey...just for fun.

If I where to design a NEW Super ORIC it would be something like this ! 65C02 CPU (of Course) running as fast as possible 64K fast static RAM (48K used min) Fast ROM (64K +) Probably a large CPLD as Glue logic..generating video, Memory decoding, & extra functions,video modes etc. W6522 VIA AY-3-8910...
by harry66
Fri Mar 04, 2016 10:58 am
Forum: Hardware hacks and extensions
Topic: Homebrew ORIC computer ??
Replies: 12
Views: 5909

Re: Homebrew ORIC computer ??

Western Design Centre (Home of the 6502) : They still make loads of NEW 6502 ICs http://www.westerndesigncenter.com/wdc/ I've also seen quite a lot of NOS 6502s (from Europe, UK) on ebay http://www.ebay.co.uk/itm/Western-Design-Center-W65C816S6PLG-14-Microprocessor-Qty-5-Rockwell-CMD-/262280185449?h...
by harry66
Thu Mar 03, 2016 4:20 pm
Forum: General Discussion
Topic: Silly Survey...just for fun.
Replies: 6
Views: 3581

Silly Survey...just for fun.

This is a follow on from a Hardware thread:

http://forum.defence-force.org/viewtopic.php?f=9&t=1325

'Super Oric' Survey .. what do you think a New Super Oric should look like and what specification (CPU,RAM,Video Sound etc) it should have?
by harry66
Thu Mar 03, 2016 1:56 pm
Forum: Hardware hacks and extensions
Topic: Homebrew ORIC computer ??
Replies: 12
Views: 5909

Re: Homebrew ORIC computer ??

I was toying with the idea of design/making my own 'Super' Oric based on a rough spec .. W65C02 CPU (possibly clocked at up-to 8MHz+) (...) All 'Pie-in-The-Sky' at the moment..but one can dream ! If you are going all the way to add so many new features, why keep a 6502 instead of say 65816 :) ? Cou...
by harry66
Thu Mar 03, 2016 1:54 pm
Forum: Hardware hacks and extensions
Topic: Homebrew ORIC computer ??
Replies: 12
Views: 5909

Re: Homebrew ORIC computer ??

We should have a survey..too see what ORIC users would like in a New 'Super' ORIC...?? Probably come up with some very interesting ideas ?
by harry66
Thu Mar 03, 2016 11:15 am
Forum: Hardware hacks and extensions
Topic: Homebrew ORIC computer ??
Replies: 12
Views: 5909

Re: Homebrew ORIC computer ??

I was toying with the idea of design/making my own 'Super' Oric based on a rough spec .. W65C02 CPU (possibly clocked at up-to 8MHz+) 64K Fast SRAM (UM61512-15) 15ns 64K Fast EEPROM W27C512 45ns A CPLD for all Glue logic , Video etc 6522 as in original AY3-8910/YM2419 Sound Chip SN76489 second sound...
by harry66
Wed Mar 02, 2016 1:47 pm
Forum: Hardware hacks and extensions
Topic: Homebrew ORIC computer ??
Replies: 12
Views: 5909

Homebrew ORIC computer ??

Hi. Does anyone know if someone has built/designed a 'Homebrew' ORIC computer. I know there's normally two mindsets when it comes to recreating old computers .. One is to use NEW FPGA type technology to emulate (and usually enhance) the original machine And Two to use original (Legacy) ICs to produc...