Search found 718 matches

by IanS
Fri Dec 14, 2018 11:22 pm
Forum: software
Topic: Nevryon
Replies: 6
Views: 154

Re: Nevryon

I suspect the game make some assumptions about the filing system and drives the machine has.

If you run the following commands

Code: Select all

*configure filesystem adfs
*configure drive 0
reboot, then try the game again, it might work.
by IanS
Wed Dec 12, 2018 10:50 pm
Forum: for sale / freebies
Topic: For Sale: IDE Podules - Nov 2018
Replies: 15
Views: 543

Re: For Sale: IDE Podules - Nov 2018

Thank you Ian! Mine arrived and works well in my A3000 :) For some reason it didn't work when I first tried it last night -- just gave me 'Bad Drive' errors whenever I tried to do anything -- but I reseated the DOM and tried it again this morning, and it came to life and looks great! Now I just nee...
by IanS
Sat Dec 08, 2018 9:50 pm
Forum: stardot.org.uk
Topic: too many logins??
Replies: 4
Views: 243

Re: too many logins??

You could try clearing out the "remember me" login keys.
login_keys.PNG
login_keys.PNG (5.12 KiB) Viewed 189 times
by IanS
Fri Dec 07, 2018 4:45 pm
Forum: hardware
Topic: A3000 in-system programmable ROM -- any interest?
Replies: 34
Views: 892

Re: A3000 in-system programmable ROM -- any interest?

Could you add some pins to the top end of ROM 4 (e.g. Pins 1-4), just for mechanical support, as the usb connector will be near there? Updated images (and design files) are up at https://github.com/google/myelin-acorn-electron-hardware/tree/master/a3000_rom_emulator -- see anything else obviously m...
by IanS
Wed Dec 05, 2018 7:40 pm
Forum: hardware
Topic: A3000 in-system programmable ROM -- any interest?
Replies: 34
Views: 892

Re: A3000 in-system programmable ROM -- any interest?

Here are some renders of the board so far, for anyone who's interested. Passes DRC and all signals are connected, although I need to shuffle things around a little (keeping crosstalky signals apart, getting rid of burrs and stuff produced by the interactive router, adding info on the silkscreen) be...
by IanS
Wed Dec 05, 2018 6:22 pm
Forum: hardware
Topic: New A3000 4MB memory
Replies: 71
Views: 2866

Re: New A3000 4MB memory

cmorley wrote:
Tue Dec 04, 2018 3:25 pm
The boards arrived today so I built one up to start testing. So far so good. I'll post one to IanS to see if it works in his computer.
Board arrived today, all tests passed so far. Looking good.
by IanS
Wed Dec 05, 2018 12:25 am
Forum: for sale / freebies
Topic: Dutchacorn clearing out
Replies: 20
Views: 806

Re: Dutchacorn clearing out

Can I claim the AKA12 & Faxmodem podules?
by IanS
Sat Dec 01, 2018 8:54 pm
Forum: for sale / freebies
Topic: Broken Cub Monitor for the taking
Replies: 5
Views: 201

Re: Broken Cub Monitor for the taking

tricky wrote:
Sat Dec 01, 2018 8:51 pm
Where are you?
Mekon wrote:
Sat Dec 01, 2018 8:37 pm
... I live in Preston, Lancashire. ...
by IanS
Fri Nov 30, 2018 10:09 pm
Forum: for sale / freebies
Topic: For Sale: IDE Podules - Nov 2018
Replies: 15
Views: 543

Re: For Sale: IDE Podules - Nov 2018

Is the DOM on the 8bit version removable, and if yes, could I remove it and connect it to another device (eg Raspberry Pi) for copying over or backing up files? Yes, it's removable. You can either plug the DOM into something else (need to get the gender of the connections right), or replace it with...
by IanS
Thu Nov 29, 2018 12:18 am
Forum: for sale / freebies
Topic: For Sale: IDE Podules - Nov 2018
Replies: 15
Views: 543

Re: For Sale: IDE Podules - Nov 2018

myelin wrote:
Wed Nov 28, 2018 11:04 pm
I'm interested in one 8-bit V3b with DOM (as long as it'll work in an A3000), shipped to Mountain View, CA.
It's fine in an A3000, it's where they have had the most testing.
by IanS
Thu Nov 29, 2018 12:17 am
Forum: for sale / freebies
Topic: For Sale: IDE Podules - Nov 2018
Replies: 15
Views: 543

Re: For Sale: IDE Podules - Nov 2018

1024MAK wrote:
Wed Nov 28, 2018 10:22 pm
Can I reserve the the following for collection at January’s ABUG meet-up please:-
I'll have a few more made for then, so I won't add you to the list for now.
by IanS
Wed Nov 28, 2018 9:44 pm
Forum: general
Topic: Today I received.....
Replies: 4928
Views: 349344

Re: Today I received.....

DavidLowe wrote:
Wed Nov 28, 2018 9:37 pm
First venture into Econet begins...
That looks familiar :wink:
by IanS
Wed Nov 28, 2018 9:43 pm
Forum: for sale / freebies
Topic: For Sale: IDE Podules - Nov 2018
Replies: 15
Views: 543

For Sale: IDE Podules - Nov 2018

Time to sell a few more IDE interfaces. Versions available:- 8-bit IDE V3b , This fits vertically within a A30x0/A4000, The podule connector pins are now fitted on the other side of the board compared to the previous batch, so they should fit in an A3020 or A4000 with an Econet card. They come suppl...
by IanS
Wed Nov 28, 2018 12:07 am
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

Anyway, i enjoy myself in making both 8 and 16 bit podules you shared with us, and you was very kind in helping me all times i got in trouble... if you PM your mail i'll offer you a paypal-beer! :wink: I'm just happy that you got them both working. How many PCB's did you get made, are you going to ...
by IanS
Tue Nov 27, 2018 10:12 pm
Forum: hardware
Topic: Repairing a dead A310 power supply
Replies: 56
Views: 3281

Re: Repairing a dead A310 power supply

Seems the caps on this board are very similar but not quite to the ones in Retroclinic's BBC cap repair kits. C1 = X2 0.01uF (RC's are 10nF X2 RIFA) C9 = 25V 470uF (RC's are 35V 220uF) C2 = ??? (the popped one has burned so no idea what it is apart from some type of RIFA) (RC's are 100nF X2 RIFA) I...
by IanS
Tue Nov 27, 2018 9:58 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

Mission accomplished! last two (i promise! :D ) question, as cherries upon the cake... - is there a way to make front yellow led flashing when podule's drive is operating? - if replacing HD with a SDcard ide, i can format it in ADFS but i got "broken directory" when accessing.. is possible to use i...
by IanS
Tue Nov 27, 2018 6:44 pm
Forum: other vintage computer hardware, software and games
Topic: Anyone used jlpcb.com for fabricating PCBs?
Replies: 8
Views: 384

Re: Anyone used jlpcb.com for fabricating PCBs?

I assume we are talking about jlCpcb.com and not jlpcb, as in the thread title.
by IanS
Tue Nov 27, 2018 6:35 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

Found the bug! and was wery small... a drill on the pcb in the D2 line from ROM and GAL was scrapy.. and line interrupted! a wire solved and podule start! now trying to use hform on CF card without formatting my IDE Discs... :lol: Run hform from floppy, and disconnect the IDE connected to the on-bo...
by IanS
Tue Nov 27, 2018 12:28 am
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

aotta wrote:
Tue Nov 27, 2018 12:14 am
it seems the 3rd bit (4) is always set.. :wink:
Yep, time to check your soldering.
by IanS
Mon Nov 26, 2018 11:39 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

Try this for the GAL. IDE_Podule.zip Thank you, but no difference... always same exception. I will recheck all solders tomorrow and made further test.. :( With the podule in slot 0, can you run the command "*memory b 03340000+ff". This should show the first part of the rom. The rom will appear in e...
by IanS
Mon Nov 26, 2018 10:40 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

The jumper on JP3 solved purple screen issue, and now it boot with CF attached, but i get always address exception and podule isn't recognized. 5V found at last pin of each IC, and removed U1 & U3 make no difference. I used GAl for if0, but i decoded it myself to JED format, maybe i made some error...
by IanS
Mon Nov 26, 2018 10:07 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

too beauty to be real... finished assembling 16bit board, installed on the A5000 and: - with ide (cf or real hd) connected, hangs on purple screen; - without ide connected, it boot but at *podules command i get: "internal error: address exception at &0382601c", with all four combination of jp1 & jp...
by IanS
Sun Nov 25, 2018 11:00 pm
Forum: hardware
Topic: IDE interfaces - hardware details
Replies: 83
Views: 3459

Re: IDE interfaces - hardware details

i am working on 16bit podule version, i am missing only soldering resistors but i need some help for their values (for r8 to r31 ones) and i am not sure about j1 and jp3 role.. Ide16.jpg may be give me a little help IanS? r8 - r31 are series resistors for the ide signals. Dave suggests they are ess...
by IanS
Sun Nov 25, 2018 8:34 pm
Forum: hardware
Topic: VL2304PS-QC - ANNA
Replies: 22
Views: 624

Re: VL2304PS-QC - ANNA

I would have thought an 16L8A could be reverse engineered by applying a binary sequence to pins 1..9 and see what outputs on 11..19, its only AND/OR gates. Interesting, I always assumed there was some sort of state machine embedded in the PAL, maybe not. I guess it could be using the unconnected ou...
by IanS
Sun Nov 25, 2018 3:25 pm
Forum: hardware
Topic: VL2304PS-QC - ANNA
Replies: 22
Views: 624

Re: VL2304PS-QC - ANNA

dp11 wrote:
Sun Nov 25, 2018 12:06 pm
I've looked in the loft and I was thinking of VLSI app note 14 which is actual async operation of ARM and IOC. Sorry
Thanks for looking.
by IanS
Sun Nov 25, 2018 11:16 am
Forum: hardware
Topic: VL2304PS-QC - ANNA
Replies: 22
Views: 624

Re: VL2304PS-QC - ANNA

I actually have that PAL in a reasonably easy to find spot. I spotted it when I was preparing for ABUG so I've seen it in the last month. If someone wants to read it, I can dig it out and send it. Paul I'll do that, Paul. Then if anyone wants one of tha Anna chips I can also include the PLD to go w...
by IanS
Sat Nov 24, 2018 11:41 pm
Forum: hardware
Topic: VL2304PS-QC - ANNA
Replies: 22
Views: 624

Re: VL2304PS-QC - ANNA

dp11 wrote:
Sat Nov 24, 2018 11:34 pm
One of the very early VLSI appnotes had a set equations for the PLD
Interesting do you have a link to that? (Or a paper copy you could scan?)
by IanS
Sat Nov 24, 2018 10:55 pm
Forum: hardware
Topic: VL2304PS-QC - ANNA
Replies: 22
Views: 624

Re: VL2304PS-QC - ANNA

daveejhitchins wrote:
Sat Nov 24, 2018 10:43 pm
Have we a part number for the original PLD? I have a lot of unknown ones!
Probably "0276 032-01". It matches my A305 MEMC1 pal and the one shown here - https://www.retro-kit.co.uk/page.cfm/co ... 0-RISCOS2/
by IanS
Fri Nov 23, 2018 4:02 pm
Forum: hardware
Topic: VL2304PS-QC - ANNA
Replies: 22
Views: 624

Re: VL2304PS-QC - ANNA

I might be interested if they can be used to put one of my machines back to its original spec. It's only of use if you can find the appropriate PAL to go with them. When you replace the MEMC1 with a MEMC1a you had to replace a PAL chip. The PAL chip for the MEMC1a is just a 1-1 pin mapping and easy...