Search found 442 matches

by bprosman
Sun Oct 25, 2020 1:31 pm
Forum: acorn atom and acorn system series
Topic: New AtoMMC board: V4
Replies: 56
Views: 1457

Re: New AtoMMC board: V4

Nice work Roland, was wondering where the latest and greatest design is published of the MMC, got a bit lost there.
by bprosman
Sat Sep 26, 2020 9:56 pm
Forum: acorn atom and acorn system series
Topic: System 5 / 6502A cpu card - questions
Replies: 31
Views: 1599

Re: System 5 / 6502A cpu card - questions

I'm not sure what I will need to build next to test this out as I have no VDU cards available...so maybe that should be my next project. What would be the best? Teletext of 80x25? Actually tonight in the car I was thinking of this project but also a way to test the 6502/CPU board in case you don't ...
by bprosman
Sat Sep 26, 2020 12:58 pm
Forum: acorn atom and acorn system series
Topic: System 5 / 6502A cpu card - questions
Replies: 31
Views: 1599

Re: System 5 / 6502A cpu card - questions

Hi Dominic,

Are you willing to share the "Netlist" to verify the schematic ?

Kind regards, Bram
by bprosman
Wed Sep 23, 2020 3:08 pm
Forum: acorn atom and acorn system series
Topic: System 5 / 6502A cpu card - questions
Replies: 31
Views: 1599

Re: System 5 / 6502A cpu card - questions

is the System 5 cpu less interesting than earlier boards?
I am truely interested but currently in the middle of a "makeover" of my house/livingroom with hardly time for electronics.
But I'm interested in building a System 5 board as well.
by bprosman
Sat Sep 12, 2020 8:12 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Let me see what I can do with this board. The lack of a serial port shouldt be the end of the world, in the end the original Godil didnt have one either and needed a serial level shifter.
by bprosman
Wed Sep 09, 2020 9:58 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Switching to the Mojo V3 (a widely available Spartan 6 board)
Seems to be retired as well (atSparkFun) but maybe there are other sources.
I agree designing your own board gives the most flexibility (independency).

Regards, Bram
by bprosman
Wed Sep 09, 2020 5:00 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Hope that David/Hoglet can/will share his view on this latest board. That seems to be available more widely on AliExpress as a S602 board.
by bprosman
Mon Sep 07, 2020 11:15 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Got the boards in, of course they are a bit off the EEPizza board. Unfortunately the Micro USB does not have a UART connected, of course it is possible to have this connected to the FPGA pins via a TTL (3V3) - USB adapter. Attached the schematics and layout of the board, hopefully Hoglet can say som...
by bprosman
Sun Aug 23, 2020 12:29 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Nor is anyone actively working on cloning the EEPIZZA at present. Unfortunately too many issues with my son going on that require attention as well as my living room is a construction site :? You would need to get a pinout of the connectors. Positioning of the power/ground pins is critical. Ordered...
by bprosman
Wed Aug 05, 2020 2:43 pm
Forum: acorn atom and acorn system series
Topic: My first Atom....
Replies: 26
Views: 1330

Re: My first Atom....

But sadly I never did manage to get suitable/fitting paper for it...
Cant you unlock the left paper guide, shift it to the left and put standard A4 paper in it ?
https://www.vikingdirect.nl/nl/Niceday- ... -p-4580757
by bprosman
Tue Jul 21, 2020 10:14 am
Forum: acorn atom and acorn system series
Topic: Restoring Atom's with a minimum of technical knowledge
Replies: 4
Views: 422

Re: Restoring Atom's with a minimum of technical knowledge

The exceptions of course are the IC's for the operating system and the floating point IC.
2532 Eproms are still sort of available as NOS , so the FP chip can still be "created".
Worst case you also can use an EPROM with an adapter socket for the OS.
by bprosman
Tue Jul 21, 2020 8:40 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Hi,

What do you mean by :
I just can't nudge it. I hacked together pins for the DIP. I'll make it right when I get those PreciDips in.
by bprosman
Mon Jul 20, 2020 8:50 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Yep. I've made a 9 pin serial connector. Pin 2 TX to 1C, Pin 3 RX to 2A, Pin 5 GND to 1A Hope you didn't break the Godil as the serial port is TTL level , not RS232, you need a converter. Sure you didn't damage any traces ? Do the LED's something ? Dave knows better than I whether they give you som...
by bprosman
Mon Jul 20, 2020 8:10 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

That should do the trick.
Looking at the jumper wires you're ok for an ICE-T80 (Z80).
Now you should be able to connect a serial port via a TTL-USB adapter.
(See picture)
Godil-80.JPG
by bprosman
Sun Jul 19, 2020 12:00 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Plan Ahead keeps complaining about a license but it's working.
You can just request a license at the Xilinx website or with the License tool and its being mailed to you.
Now I gotta figure out how to program it.
https://github.com/hoglet67/AtomBusMon/ ... -in-iMPACT
by bprosman
Sun Jul 19, 2020 10:34 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Actually I don't install the VM version but straight into W10. Using this file : Xilinx_ISE_DS_Win_14.7_1015_1 Then fix it for Windows 10 (see attachment). If you want to develop here some notes I made (with help of Dave / Hoglet). Install ISE 14.7 Fix the 64 bit version If you stop here, this shoul...
by bprosman
Sun Jul 19, 2020 9:40 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

If only I can get this damn Xilinx software to install.
What OS are you using ?, as on Windows 10 its pretty straight forward.
by bprosman
Sun Jul 19, 2020 6:48 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Hi , no the programmer won’t power the Godil, actually the programmer checks the voltage otherwise it will throw an error message. Not only jumper them when programming and supplying power but leave them when you put the ICE in the target machine otherwise it wont be powered either. And to repeat , ...
by bprosman
Sat Jul 18, 2020 10:17 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

This is how I jumpered them for a 6502, Red = Vcc, Black = Gnd and the serial connection, as Dave says, you take the pins that originally also are powered at the original CPU. F508914B-E96B-4E02-92CF-865442815BE2.jpeg 801D2258-2946-42E9-9BE4-B3D4AFB82461.jpeg FFF7C590-B55D-4D8C-A557-A75282B2F8FA.jpe...
by bprosman
Fri Jun 12, 2020 7:59 pm
Forum: acorn atom and acorn system series
Topic: Atom 2k18 ?
Replies: 326
Views: 27522

Re: Atom 2k18 ?

Today I received this board. It's slighty larger than the EEPizza and unfortunately lacks the serial port (converter).
IMG_2897.jpg
@Retrogadgets, please pm me your postal address.
by bprosman
Fri Jun 12, 2020 11:46 am
Forum: acorn atom and acorn system series
Topic: Atom 2k18 ?
Replies: 326
Views: 27522

Re: Atom 2k18 ?

Yes I made an adapter from the Godil50 to a 40P DIP.

viewtopic.php?f=41&t=12954&p=221943&hilit=godil#p221943
by bprosman
Wed Jun 03, 2020 7:28 am
Forum: acorn atom and acorn system series
Topic: A "New" Atom
Replies: 4
Views: 574

Re: A "New" Atom

Indeed Kees, doubting whether I restore it or not as the picture will never be as good as Hoglet's HDMI interface.
by bprosman
Tue Jun 02, 2020 10:01 pm
Forum: acorn atom and acorn system series
Topic: A "New" Atom
Replies: 4
Views: 574

A "New" Atom

Today I acquired a "reasonably priced Atom" from "Marktplaats" (Dutch e-bay). The nice thing was is that the seller and I had an agreement , an appointment , after that i have been over-bidden twice but the seller was a "deal-is-a-deal" person, kudo's as that starts to become more and more and excep...
by bprosman
Sun May 17, 2020 10:18 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

I made some HiRes pictures. 2 Questions I have : @Dave do you have an idea (or educated guess) how many layers the EEPizza board has ? My guess is at least 4,with (maybe?) a power and ground plane. Looking at my board pictures it looks that the voltage regulators are already larger than SOT-223 P517...
by bprosman
Sun May 17, 2020 12:46 am
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

This might be an alternative though its lacking the serial (FTD) interface. https://www.ebay.com/itm/DC5V-XILINX-Spartan-6-XC6SLX9-FPGA-CPLD-Developement-Board-remaining-IO-JTAG/272912966752 Same for this : https://www.ebay.com/itm/Xilinx-Spartan-6-XC6SLX9-development-board/264652356207 Or this one ...
by bprosman
Sat May 16, 2020 4:11 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Playing with the idea of making a clone but sourcing of the EEPROM used on the board is scaring me off a bit.
by bprosman
Tue May 05, 2020 2:43 pm
Forum: acorn atom and acorn system series
Topic: Acorn atom repair
Replies: 16
Views: 992

Re: Acorn atom repair

Do you know anything about the quality of this board Kees ? Meaning the picture quality.
by bprosman
Fri Apr 24, 2020 11:30 pm
Forum: acorn atom and acorn system series
Topic: ICE T65/Z80/6809
Replies: 971
Views: 102019

Re: ICE T65/Z80/6809

Hi Dave, if you do I would be willing to split some costs.
Today I received this board.
Not seeing it as a real replacement for the EEPizza as the form factor is quite large.
Pricing is quite cheap though , around $14.
https://nl.aliexpress.com/item/32887046050.html

(Schematic attached).
by bprosman
Wed Apr 15, 2020 4:35 pm
Forum: acorn atom and acorn system series
Topic: Another dead atom
Replies: 21
Views: 988

Re: Another dead atom

Elektor used to have a RAM tester which I built in the past. It's in Dutch but the schematics are international.
ram-tester.pdf
(1.64 MiB) Downloaded 27 times

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