Search found 1035 matches

by fordp
Wed Nov 25, 2015 6:07 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I have just pulled the latest from Github, programmed the Flash, built the image in Quartus || and sent it to my DE1. Flip Audio now works, thanks Dave. I will test some other sound stuff I have. [Edit] Everything music file I have tried now works! Yay, great job! As you might have guessed from my p...
by fordp
Wed Nov 25, 2015 2:28 pm
Forum: hardware
Topic: Fix your Beeb Chip
Replies: 10
Views: 1243

Re: Fix your Beeb Chip

There is already a test ROM image. A normal EPROM will work, and if you get the right EEPROM, that should work as well. The existing test ROM code is however, very limited. What is really needed, is for a more comprehensive test program to be written in machine code. The requirements are: First job...
by fordp
Wed Nov 25, 2015 1:23 pm
Forum: acorn atom and system
Topic: Matchbox sized 6502 / Z80 / 6809 Co Pro
Replies: 1214
Views: 129190

Co Pro on the Electron

I have been reading this thread over the last week, interesting ... After reading this thread I know that Dave would like to get the Co Pro's working on the Electron. This gave me the impression that Co Pro's had never been run on the Electron before. Today I was reading about the "Electron AP5" whi...
by fordp
Wed Nov 25, 2015 12:00 pm
Forum: hardware
Topic: Fix your Beeb Chip
Replies: 10
Views: 1243

Fix your Beeb Chip

Having seen various broken BEEB threads. How about using an FM 1608B FRAM with custom firmware in it in the OS ROM Socket as a debug aid? You would need to put the chip in an extra socket to protect the pins and connect the WE pin separately via a clip. The firmware would need a working 6502, Addres...
by fordp
Tue Nov 24, 2015 10:19 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I have fixed Master mode, the Flash was not programmed correctly, no idea why I used the same procedure as the first time! I erased it and reflashed and it is working now. I have loading the image built on my Quartus II (13.0.1) and that works too. Just double checked "Flip!" and no change there. It...
by fordp
Tue Nov 24, 2015 9:47 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

A good example of very poor audio is in the game FLIP!. The timing of the opening credits may be off too. I seem to remember the timing was lumpy on the real Beeb too however!

FordP
by fordp
Tue Nov 24, 2015 9:31 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Well I have some results. My monitor which is an LCD TV works in both sRGB and VGA modes when in mode 7 straight in to the VGA port. It blanks for a long time but then comes back. Mode 7 is best in sRGB mode on my screen for mode 7 but worse in the the other modes. The Mist scan doubler picture qual...
by fordp
Tue Nov 24, 2015 7:10 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Hard to be sure Dave as it is not working great. BBC Master mode is really not working well for me. BBC Micro mode works better but I am getting some strange text messages. Some sof's are better than others. I had a game of Acornsoft Snapper however, and the file loader is one written by me and my b...
by fordp
Tue Nov 24, 2015 6:41 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Looks like my DE1 is back from the dead. Working for an Electronics company has its uses.

Ford
14483903372011524518908.jpg
by fordp
Tue Nov 24, 2015 11:48 am
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I tried this on my Ubuntu machine and it does not show up :( I may have to try and take it in to work and try and get it fixed. I will study the circuit diagram and try and see what it is. FordP I have a new FTDI chip on my DE1 and now when you plug it in a PC it asks for a driver :D Oh and a Mist ...
by fordp
Sat Nov 21, 2015 5:49 pm
Forum: hardware
Topic: Electron FPGA
Replies: 87
Views: 10635

Re: Electron FPGA

fordp wrote:
-- Snip --

A VT100 or VT52 terminal design in the Boot Design would be cool.

FordP
What was I thinking it would have to a Viewdata/ Prestel compatible terminal for an Acorn project ;)

FordP
by fordp
Sat Nov 21, 2015 12:45 pm
Forum: hardware
Topic: Electron FPGA
Replies: 87
Views: 10635

Re: Electron FPGA

13 Designs should cover most bases.

I think the AVR should be used to host a Boot menu.

The HDL in the first design can allow the AVR to write to the screen and pre-load the RAM before the other Designs load.

A VT100 or VT52 terminal design in the Boot Design would be cool.

FordP
by fordp
Sat Nov 21, 2015 12:01 pm
Forum: hardware
Topic: Electron FPGA
Replies: 87
Views: 10635

Re: Electron FPGA

Hi All,
I have just ordered a Duo 2MB with computing add-on.

You can never have too many FPGA boards and if I do not get my DE1 going I will be able to play :D

2MB of RAM should give interesting options.

I wonder if the on-board micro is wired in a suitable way to reprogram the FPGA?

FordP
by fordp
Fri Nov 20, 2015 7:07 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Hi Dave, The FPGA is showing great signs of life as it is running a version of Minimig, which is working fine as far as I can tell. The Power LED seems normal but the second LED is not a bright as I think it shout be. It may be a problem with one of the regulators or elsewhere in the PSU section. Th...
by fordp
Fri Nov 20, 2015 5:46 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

My DE1 is not showing up as a USB device on my machine. I am not sure if this a hardware or software issue at the moment. I think I had this issue before. Do you have a Linux machine you can plug it into? dmesg lsusb | grep Altera Should verify that the hardware is being recognised. Dave I tried th...
by fordp
Thu Nov 19, 2015 9:59 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I've been playing with the Music 5000 for the last couple of hours, and all I can say is it's a bloody amazing bit of (virtual) kit. I recommend downloading the collection of Panda Discs: http://www.stardot.org.uk/forums/viewtopic.php?f=2&t=8612#p94115 There is an index here: http://www.retro-kit.c...
by fordp
Thu Nov 19, 2015 8:59 am
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

My DE1 is not showing up as a USB device on my machine.

I am not sure if this a hardware or software issue at the moment.

I think I had this issue before.

I do hate the Plug and Pray that is Windows USB.

FordP
by fordp
Wed Nov 18, 2015 11:06 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I am still struggling to get my DE1 talking to my Windows 10 PC :(
by fordp
Tue Nov 17, 2015 10:23 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I could not get my DE1 going yet but I have dug out my BBC MIDI interface:
IMG_20151117_221811.jpg
FordP
by fordp
Tue Nov 17, 2015 9:46 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

It is down to how the path is quoted.

The ones that work have ../../AtomBusMon

and those two do not have it that way!

I have copied them over for now.
fpag.jpg
fpag.jpg (22.69 KiB) Viewed 926 times
I have it building now with 193 warnings!

FordP
by fordp
Tue Nov 17, 2015 9:10 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Hi Dave,

I have cloned a few repositories now :D

but it looks like AtomBusMon/oho_dy1/OhoPack.vhd and AtomBusMon/oho_dy1/Oho_Dy1.vhd are missing!

FordP
by fordp
Tue Nov 17, 2015 8:50 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

I just cloned the github repository downloaded Quartus and I get the errors below: Which is this 6502 debug tool I guess is in a separate repository. Info: ******************************************************************* Info: Running Quartus II 64-Bit Analysis & Synthesis Info: Version 13.0.1 Bu...
by fordp
Tue Nov 17, 2015 12:58 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

My DE1's are very old and do not have the SRAM problem I think. Earlier in this thread (or maybe another thread) you said you were using the RAM at 32Mhz and could maybe clock it down to 4MHz which was of course the speed of the RAM on the actual BBC. Your idea to gate the control lines is good as i...
by fordp
Tue Nov 17, 2015 8:11 am
Forum: hardware
Topic: UMI 2B Sequencer for BBC
Replies: 15
Views: 3360

Re: UMI 2B Sequencer for BBC

Did you get anywhere with getting the ROMs you need?

FordP
by fordp
Tue Nov 17, 2015 7:55 am
Forum: hardware
Topic: MIDI on the BBC
Replies: 3
Views: 745

Re: MIDI on the BBC

Must have searched badly before.

Looks like it was an "UMI 2B".

Cheers All,

FordP
by fordp
Tue Nov 17, 2015 7:46 am
Forum: hardware
Topic: MIDI on the BBC
Replies: 3
Views: 745

MIDI on the BBC

Does anybody know the Hardware and Software used by Vince Clark in the 1980's. I did know back in the day but I cannot remember now. I know I could not afford it. I saw them live. I could hear the BBC disk drive between the songs and you could see him pressing a button on a box on top of the BBC to ...
by fordp
Mon Nov 16, 2015 10:54 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Thanks for the prompt reply. I am pleased my spare DE1 is no longer gathering dust. Do not worry about the postage, its on me. It was only the price of a couple of beers anyway. I look forward to finally preserving some of my old programs and being able to run/ play them again on a sturdy modern pie...
by fordp
Mon Nov 16, 2015 10:11 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Any early adopters for the Altera DE1 Build? :D :D :D ---- Snip ------ Have fun, and let me know if you have any problems..... Dave Oops just seen this. I will find some time to try this before the weekend and report back. I may be running my Yatzee game I wrote during the '80s before too long :D C...
by fordp
Mon Nov 16, 2015 9:59 pm
Forum: hardware
Topic: Beeb FPGA
Replies: 505
Views: 45004

Re: Beeb FPGA

Well done Dave, Amazing progress in such a short time. I like your audio hack to avoid aliasing. Are there any low pass filters to match the BBC circuit or is the output notionally identical to the output of the sound chip? I expect the sound output will have to mix Sid's, cassette output and M5000'...
by fordp
Mon Nov 16, 2015 12:02 pm
Forum: general
Topic: Today I received.....
Replies: 5611
Views: 467550

Re: Today I received.....

Just received this from FordP: IMG_0142.JPG =D> =D> =D> =D> =D> =D> =D> Many thanks! The BeebFpga adventure can continue...... Wow, Royal Mail did us proud! It is great to see another of my DE1 boards put to good use. My DE1 is waiting to do BBC things for the first time ;) Yay! FordP