03 July 2021, 21:46 | #1 |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
Open source 14MHz 68000 accelerator
This is a 14MHz 68000 accelerator with 1MB fast ram and disable switch for the Amiga.
The main attraction of this design is that it uses no programmable logic. Only standard 7400 & 4000 logic. Tested on a rev. 5 Amiga 500. It might also work on other revisions and Amiga models but that has not been tested. The design is licensed under CERN OHL-S V2.0 The design is a complete overhaul of a design by Livio Plos and Jorg Richter. All files can be found on github here: https://github.com/Mathesar/14mhz-accelerator Changes include:
The accelerator can be build in 3 variant:
Moved from the previous thread here: http://eab.abime.net/showthread.php?t=97512 Last edited by Mathesar; 03 July 2021 at 21:55. |
03 July 2021, 21:51 | #2 |
Registered User
Join Date: May 2018
Location: Germany, Baden-Wuerttemberg
Posts: 387
|
I like the clean looks and the KiCad logo! :-D
Gesendet von meinem XQ-BT52 mit Tapatalk |
03 July 2021, 22:24 | #3 |
Mighty Pirate
Join Date: Dec 2017
Location: On the borderline
Age: 44
Posts: 177
|
Great works , congrats! You know what we gotta do...
|
03 July 2021, 23:04 | #4 |
Registered User
Join Date: Jan 2020
Location: oslo/norway
Posts: 1,630
|
This design is great
Looking forward for someone to build and sell. |
04 July 2021, 21:28 | #5 |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
As requested, a sysinfo screenshot.
This was using a 68010 cpu. With an 68000 sysinfo reports 1.49 MIPS. |
04 July 2021, 21:29 | #6 |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
|
05 July 2021, 08:11 | #7 |
Registered User
Join Date: May 2018
Location: Serbia
Posts: 7
|
Great work!
Is it possible version with 1.8MB of RAM? |
05 July 2021, 15:47 | #8 |
Registered User
Join Date: Jan 2020
Location: oslo/norway
Posts: 1,630
|
Maybe we could make order together if someone is interested in building them?
I think it would be hard to sell for over 50Euro + shipping without CPU, but at that price I think it will sell well. |
05 July 2021, 20:19 | #9 | |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
Quote:
Passives and logic IC's are cheap as well. The most expensive parts are the RAM chips, pin headers and cpu socket. The pin headers and socket could probably be sourced from ebay but I would definately buy the logic and RAm from a reputed source like Mouser/Digikey/Farnell etc. Aisler supplies the passives for free with your order |
|
05 July 2021, 20:34 | #10 |
Registered User
Join Date: Jan 2020
Location: oslo/norway
Posts: 1,630
|
Could you please put every part needed in a list?
Thanks |
05 July 2021, 20:42 | #11 |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
|
05 July 2021, 20:53 | #12 |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
|
05 July 2021, 23:58 | #13 |
mä vaan
Join Date: Nov 2001
Location: Finland
Posts: 1,690
|
This would be nice to my GVP HD8+ and A500 system. Any one building/selling these?
|
13 July 2021, 22:43 | #14 |
mä vaan
Join Date: Nov 2001
Location: Finland
Posts: 1,690
|
Any one building these for a sale?? I would like ot get one.
|
13 July 2021, 23:37 | #15 |
Zone Friend
Join Date: Mar 2004
Location: Middle Earth
Age: 40
Posts: 2,130
|
Great work. How much of a game changer would this have been back in the late 80s early 90s (same license as well) if it was published in one of the Amiga magazines?
|
27 July 2021, 11:24 | #16 |
Registered User
Join Date: Jul 2017
Location: Germany
Posts: 205
|
With no programmable logic, this is well done Mathesar. Thanks for the hard work on it
|
27 July 2021, 16:43 | #17 |
Thalion Webshrine
Join Date: Jan 2004
Location: Oxford
Posts: 14,597
|
Nice work. Certainly an option for A500 users that have an A590 or GVP HD8+ or some other form of mass storage interface
|
28 July 2021, 01:01 | #18 |
mä vaan
Join Date: Nov 2001
Location: Finland
Posts: 1,690
|
That is exactly my thought. I would like to get one for my GVP HD8+ system, but seems that nobody is going to do these for sale.
Last edited by utri007; 28 July 2021 at 11:44. |
28 July 2021, 08:18 | #19 |
Registered User
Join Date: Jan 2020
Location: oslo/norway
Posts: 1,630
|
I'm planing to build some but the sram is quite expensive.
|
28 July 2021, 11:10 | #20 |
Registered User
Join Date: Aug 2014
Location: Netherlands
Posts: 702
|
What prices have you found? You can use almost all 32TSOP-II 512K * 8 SRAM 5V chips.
This is a selection on digikey: https://www.digikey.nl/products/en/i...=1&pageSize=25 EDIT: previous link also contained 3 3V only RAM chips, this new link is correct. Last edited by Mathesar; 01 August 2021 at 07:18. |
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | |
Thread Tools | |
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
68000 Alien Vs Predator Jaguar Source code | redblade | Coders. Asm / Hardware | 31 | 14 July 2022 20:18 |
14Mhz Accelerator | Kai | Hardware mods | 145 | 27 July 2021 11:11 |
Open Source A500 accelerator cooking nicely | Pat the Cat | News | 23 | 02 January 2017 01:39 |
AGA on 14mhz 68000 | little | request.UAE Wishlist | 6 | 03 May 2012 23:09 |
A2620 Accelerator Card 12mhz instead of 14mhz. Problem? | kjmann14 | support.Hardware | 1 | 19 May 2011 00:35 |
|
|