Search found 4196 matches

by daveejhitchins
Sun Jul 22, 2018 11:31 am
Forum: hardware
Topic: Cumana Dual 5 1/4 floppy drive
Replies: 31
Views: 1045

Re: Cumana Dual 5 1/4 floppy drive

I'd have thought the double sided tape would be too heavy! The weight of the original 'foam' piece was Very Light . . .

Dave H :D
by daveejhitchins
Sun Jul 22, 2018 11:21 am
Forum: hardware
Topic: Electron overheating video
Replies: 36
Views: 566

Re: Electron overheating video

Is the PSU inside the main case (sorry don't have an Electron)? If so, drawing more current from the PSU may not be causing problems with voltage sag, just causing the PSU to generate more heat and contribute to the inside the case temperature. Yes, the PSU is inside the Electrons case with the AC ...
by daveejhitchins
Sun Jul 22, 2018 11:15 am
Forum: for sale / freebies
Topic: Some more goodies found
Replies: 1
Views: 77

Re: Some more goodies found

More . . . .
IMG_2705.jpg
2705A - Free - just cost of P&P
IMG_2706.jpg
2705B - Free - just cost of P&P
IMG_2707.jpg
2707 - Free - just cost of P&P
Dave H :D
by daveejhitchins
Sun Jul 22, 2018 11:10 am
Forum: for sale / freebies
Topic: Some more goodies found
Replies: 1
Views: 77

Some more goodies found

Whilst looking for my Original AP5 (stored away safely :roll: ) I found the following: If you're interested in an item, please PM me referring to the item number, thanks . . . IMG_2695.jpg IMG_2696.jpg IMG_2697.jpg IMG_2698.jpg IMG_2699.jpg IMG_2700.jpg IMG_2701.jpg IMG_2703.jpg IMG_2704.jpg More . ...
by daveejhitchins
Sun Jul 22, 2018 10:28 am
Forum: hardware
Topic: P.R.E.S. AP5 - Original and Re-Design
Replies: 288
Views: 22096

Re: P.R.E.S. AP5 - Original and Re-Design

DaveB (Hoglet) has found an Error with the AP5 design! See this thread. So far it doesn't look as if it's very serious - e.g. Just remove it for now, if you experience any issues with the 1MHz Bus operation (none reported, so far!) or any issues with > See above link. Any updates on this issue will ...
by daveejhitchins
Sun Jul 22, 2018 10:20 am
Forum: software: other
Topic: ADFS 1.30 disassembly
Replies: 69
Views: 5506

Re: ADFS 1.30 disassembly

Found it . . . There's a 1K pull down connected to pin 12 of the Tube connector - Data 0. With nothing connected to Data 0 on the 1MHz Bus connector. Ooooops! It seems as if this may just need to be removed. I'll post this error in the AP5 thread and keep everyone up-to-date on any further issues wi...
by daveejhitchins
Sun Jul 22, 2018 9:19 am
Forum: software: other
Topic: ADFS 1.30 disassembly
Replies: 69
Views: 5506

Re: ADFS 1.30 disassembly

OK, Can't find my original AP5 (I've put it somewhere safe :lol: ), however, here's a photo showing a resistor near to the Tube connector - I don't see any reason, other than the pull down in question, why that should be there! So, probably right about it being in the wrong place - - - I'll keep on ...
by daveejhitchins
Sun Jul 22, 2018 7:13 am
Forum: software: other
Topic: ADFS 1.30 disassembly
Replies: 69
Views: 5506

Re: ADFS 1.30 disassembly

So, what's the purpose of R7??? It seems it was copied over from the original AP5 reverse engineered schematics (R1 there). It actually makes more sense for this to be on the Tube than the 1MHz bus. On the Tube it would ensure the Co Pro detection worked correctly. Dave, is any chance this is a sma...
by daveejhitchins
Sun Jul 22, 2018 6:49 am
Forum: general
Topic: Today I built ...
Replies: 29
Views: 2313

Re: Today I built ...

I'm still enjoying the building side . . . .
20180521-IMG_2398.jpg
IMG_1300.jpg
But probably aren't making as many as Chris!

Dave H :D
by daveejhitchins
Sat Jul 21, 2018 5:34 am
Forum: software: classic games
Topic: Mega Games Cartridge for the Electron MGC
Replies: 453
Views: 42594

Re: Mega Games Cartridge for the Electron MGC

Sorry, Martin . . . I've been over to Manchester laying laminate flooring in my eldest daughters new extension <sigh>

I need to go back, some time soon, to change a radiator in my youngest daughters utility room <bigger sigh> lol

I'll get something sent this weekend.

Dave H :D
by daveejhitchins
Sat Jul 21, 2018 5:07 am
Forum: hardware
Topic: Electron overheating video
Replies: 36
Views: 566

Re: Electron overheating video

@Duncan . . . Everything should be well buffered, in respect of the Data lines etc. Which would only leave the power supply! I've carried out lots of tests, recently and BITD, however, there's still a chance you could have a faulty unit. Could you monitor the +5V line at the PSU connector to the mai...
by daveejhitchins
Thu Jul 19, 2018 8:11 am
Forum: introduce yourself
Topic: Hi!!
Replies: 12
Views: 174

Re: Hi!!

Welcome to the Forum, Mike . . . Enjoy . . .

You need an Electron . . . But I'm biased :mrgreen:

Dave H :D
by daveejhitchins
Thu Jul 19, 2018 8:06 am
Forum: introduce yourself
Topic: Hello!
Replies: 17
Views: 270

Re: Hello!

Welcome to the Forum, Zuffle . . . Enjoy . . .

Looking forward to some interesting Music :wink:

Dave H :D
by daveejhitchins
Wed Jul 18, 2018 7:06 pm
Forum: introduce yourself
Topic: Hello from Basingstoke!
Replies: 10
Views: 105

Re: Hello from Basingstoke!

Welcome to the Forum, Soruk . . . Enjoy . . .

Dave H :D
by daveejhitchins
Sat Jul 14, 2018 7:34 am
Forum: software: classic games
Topic: Mega Games Cartridge for the Electron MGC
Replies: 453
Views: 42594

Re: Mega Games Cartridge for the Electron MGC

Hmmmm! Wonder where that went? . . . Did I use your 'other' eMail address in error? I'll check now - small pause - Darn, can't find hide nor hair of it - plays theme tune from some spooky film - OK I'll send it again (well, I'll try! :?

Dave H :D
by daveejhitchins
Sat Jul 14, 2018 7:05 am
Forum: software: classic games
Topic: Mega Games Cartridge for the Electron MGC
Replies: 453
Views: 42594

Re: Mega Games Cartridge for the Electron MGC

MartinB wrote:
Fri Jul 13, 2018 9:15 pm
Did you do anything with the naughty one yet Dave? Is it still heading my way?
Did you receive the dodgy video? I was waiting in case there were any further tests I could do before sending!

Dave H :D
by daveejhitchins
Fri Jul 13, 2018 8:21 pm
Forum: software: classic games
Topic: Mega Games Cartridge for the Electron MGC
Replies: 453
Views: 42594

Re: Mega Games Cartridge for the Electron MGC

New MGC's are now ready . . .

Dave H :D
by daveejhitchins
Thu Jul 12, 2018 5:22 pm
Forum: hardware
Topic: Proposed: "The Ultimate Electron Upgrade"
Replies: 181
Views: 14153

Re: Proposed: "The Ultimate Electron Upgrade"

hicks wrote:
Thu Jul 12, 2018 3:18 pm
When you have a board sorted even if there's no FPGA code working on it yet, let me know. I'm quite interested in doing a port myself too as a fun project.
Will do . . .

Here's an image of all I currently have and a DXF of the same:
EUU-InterfacePCB.JPG
EUU.DXF.zip
(20.68 KiB) Downloaded 1 time
Dave H :D
by daveejhitchins
Thu Jul 12, 2018 5:18 pm
Forum: hardware
Topic: Electron overheating video
Replies: 36
Views: 566

Re: Electron overheating video

May be worth getting some freezer spray and seeing which IC is causing the problem - it sounds as if it is an overheating issue . . . Dave H :D I have some deep freeze (and deep heat) for spraying on injuries. Or some spray for freezing pipes. is there a particualar brand anyone recommends? Hmmmm! ...
by daveejhitchins
Thu Jul 12, 2018 8:09 am
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 59
Views: 659

Re: EUPURS and AP5 Cable(s)

As a matter of interest Do the cables you supply connect to user port 2 Idc or the pin header? I'm supplying the USB to Serial leads, the one recommended by MartinB, along with a 9 pin 'D' to 7 pin connector for the header pins - I epoxy a 4 and 3 way together and 'mark' pin 1. IMG_2632.jpg Dave H :D
by daveejhitchins
Thu Jul 12, 2018 7:28 am
Forum: hardware
Topic: Electron overheating video
Replies: 36
Views: 566

Re: Electron overheating video

May be worth getting some freezer spray and seeing which IC is causing the problem - it sounds as if it is an overheating issue . . .

Dave H :D
by daveejhitchins
Thu Jul 12, 2018 7:00 am
Forum: hardware
Topic: Proposed: "The Ultimate Electron Upgrade"
Replies: 181
Views: 14153

Re: Proposed: "The Ultimate Electron Upgrade"

I could send you the DXF of the 'spreader' interface PCB, if that would help? Couldn't harm to look :) I'll dig it out . . . Current design replaces the ULA socket with standard turned-pin sockets. Do you have a link to the socket you're using for that? Similar to these. Whilst I think on, are you ...
by daveejhitchins
Sun Jul 08, 2018 7:58 am
Forum: hardware
Topic: EUPURS and AP5 Cable(s)
Replies: 59
Views: 659

Re: EUPURS and AP5 Cable(s)

For anyone else listening-in: I can supply the correct AP5-to-USB cables - just contact me . . .

Dave H :D
by daveejhitchins
Sun Jul 08, 2018 7:54 am
Forum: hardware
Topic: Missing old/new Electron Expansions
Replies: 76
Views: 1219

Re: Missing old/new Electron Expansions

Elminster wrote:
Thu Jul 05, 2018 3:09 pm
Is there any slogger plus 2 bareboards still hanging about, and would they work with an AP5. I would imagine a 'cut' down version of that that only had the extra cartiridges slot would be useful.
Not sure, none here . . .

Dave H :D
by daveejhitchins
Sun Jul 08, 2018 7:36 am
Forum: hardware
Topic: Broken New AP5 Fixed & Electron Mouse testing
Replies: 48
Views: 696

Re: Broken New AP5 Fixed & Electron Mouse testing

Not the MRB, pulled it this evening, was a pain as don’t know where I put the MOS, stole it from another Electron, and as they are both issue 4’s I took its ULA as well. (For my overheating issue, not put that in yet in case removing MRB fixes that). That's good, at least we're down to a basic mach...
by daveejhitchins
Sat Jul 07, 2018 10:13 am
Forum: hardware
Topic: Broken New AP5 Fixed & Electron Mouse testing
Replies: 48
Views: 696

Re: Broken New AP5 Fixed & Electron Mouse testing

Just posting this from a PM i've just sent:

"It may not be needed (the MRB, for the mouse to work), however, I'm seeing a Power-On anomaly when I'm using BeebSCSI 'sometimes' with a MRB fitted. Maybe worth a try (removing the MRB)?"

Dave H :D
by daveejhitchins
Sat Jul 07, 2018 3:26 am
Forum: hardware
Topic: Broken New AP5 Fixed & Electron Mouse testing
Replies: 48
Views: 696

Re: Broken New AP5 Fixed & Electron Mouse testing

OK, just caught up . . . Due to me not having most of what is needed, I think the best plan here is to look at the problem at Cambridge. I'll have at least one elk system - Hmmm! Better bring a spare - so we can change things out to eliminate the obvious. DaveB (hoglet) carried out extensive testing...
by daveejhitchins
Thu Jul 05, 2018 10:00 am
Forum: hardware
Topic: Missing old/new Electron Expansions
Replies: 76
Views: 1219

Re: Missing old/new Electron Expansions

1024MAK wrote:
Wed Jul 04, 2018 1:44 pm
No selection of partly corroded and covered in who knows what ½ pence coins?
Being a Yorkshireman I'm proud to still have a fluff covered farthing in my pocket :-

Dave H :lol:
by daveejhitchins
Wed Jul 04, 2018 9:49 am
Forum: hardware
Topic: Broken New AP5 Fixed & Electron Mouse testing
Replies: 48
Views: 696

Re: Broken New AP5 Fixed & Electron Mouse testing

My AP5 never worked, but I never told Dave (shhh). Well darn-you Duncan :lol: You should have let me know . . . I do test every interface before shipping - OK . . . I don't test the I 2 C or UPURS interfaces, but, as Martin points out they're just passive to the User Ports which are tested. I could...
by daveejhitchins
Wed Jul 04, 2018 8:13 am
Forum: hardware
Topic: Proposed: "The Ultimate Electron Upgrade"
Replies: 181
Views: 14153

Re: Proposed: "The Ultimate Electron Upgrade"

Just thought of some thing else. Will the original MOS go back after MRB removed? Assume not. Was on my todo list to build a Prine MRB ROM image that incorporated the *TAPE changes for gosdc. Not a feature everyone will want but be good if that image was available to use. Oh! You didn't really need...