I have recently taken delivery of two more Atari machines. The first was a Facebook marketplace sale where the guy only had the computer itself with no accessories and therefore priced it accordingly at £65. The machine in question is an Atari 1040STe. These normally sell on eBay for 100+ and it saves me having to worry about upgrading my 520STFM to get some of the more resource-hungry applications to run.
I gave it a good clean when it turned up and have replaced the floppy drive with a Gotek to make loading of software easier.
The second computer is something I hadn’t even come across before. It was launched around the same time as the ST and continued Atari’s 8 bit line of computers. This is the Atari 65XE and as you can see from the photo below it got it’s styling from it’s bigger brother. I have purchased an “S-Drive” for this computer which is a really smart looking SD Card solution for the XE. Will be interesting to check out this machines software library to see ow it compares to other 8 bit machines of the era.
I have been looking at these for a while now and this one came up for a decent price on one of the various Facebook groups I follow so I couldn’t resist. It’s all in perfect working order but the case is a bit yellowed. So this gives me an excuse to have another Retrobrighting session and this time I’m going to fully document it and make a guide for the website for anyone wishing to do the same.
Stuck out the back you can just about see the Elk128SD interface which gives the Electron 128k of RAM, a joystick port and an SD card slot for loading all the games from.
Since I purchased it, I have to admit I haven’t powered on the ZX81. It’s currently standard so only has an RF output and although I have TVs that still have analogue tuners they are just not in a convenient location to set this up. My plan was to do the composite video mod to make things a little easier but that was on my list of things to do.
Then, the other day I was browsing YouTube and came across a video where someone had bought a small 5″ CRT from Aliexpress and was connecting it to an Apple II computer. The TV he had was from an old video doorbell or something and was designed to be wall-mounted so not really what I was after. But the thought sat in my head that a small black and white CRT would be perfect for the ZX81 since it didn’t do colour anyway.
So a quick eBay search later I found a perfect condition 5.5″ Chinese monochrome CRT with a built-in RF tuner and radio for £11.99!!
And here it is, a match made in heaven!
I still need to find somewhere to set it up for display but this is a much more manageable size to deal with. The ZX81 also needs a new keyboard as the ribbon cable is perished on this one and is a bit flakey for typing programs on. I’ve also ordered a TZXDuino to help loading tape files into the older computers. I know I could use my mobile phone but these devices look so much cooler 😎
So another new computer added to the collection. This one is a bit weird! After the Commodore 64, Commodore decided their next computer would be worse in pretty much every way. Although it was cheaper and more focused as a business computer with a built-in word processor, spreadsheet, database and graphing functionality. Not surprising that it was a bit of a failure.
Still, it has a bunch of games available as it is essentially a C16. And I do actually like the overall design. Kind of reminds me of an MSX.
As you can see in the photo I’ve connected up an SD2IEC to load the software from SD-Card.
I actually have two of these currently as one was bought for cheap as untested which didn’t work. The second was from eBay and was advertised as fully working. The fully working one didn’t however display the built-in applications so I suspected a faulty ROM. I managed to get a discount on the price I paid and swapped the “3 plus 1” ROM chips over from the other unit which sorted that issue.
Whilst I had it apart I also swapped the CPU over and found that both CPUs are working fine which is a relief as they are pretty rare. So on the faulty unit, I’m going to swap out the TED chip next as I expect that is the reason why it’s not working. Hopefully, I can get it back to full working order in the near future.
I’ve actually had this for a couple of weeks now but hadn’t got around to adding it to the site. I’ve still not got around to connecting it up yet either due to being busy with other projects. I don’t see me spending a huge amount of time actually using this one as the Spectrum was a far better computer, but it will certainly be interesting to see what limitations people had to deal with on the first home micros!
I was always fascinated with the keyboard on these when I was younger, it always looked kind of futuristic like some sort of touch screen device. I expect the reality of actually typing on it will be a very different experience from what I imagined.
The interface stuck out of the back of the is the 16K memory expansion. This was pretty much an essential addon due to the ZX81 only having 1KB on board. The sticky residue on the interface was from a previous owners attempt to tape the interface to their ZX81 due to it being extremely common that if you gave it the slightest nudge when powered on, the computer would crash and you would lose your work 🙂
So I have actually had a 48k speccy sat in a box for quite some time but it is in pretty bad shape so didn’t consider it as part of my collection. Recently I was given a bundle of retro bits and included were another two 48ks. One was a board only and one was cased. Again the case wasn’t in great condition but it was a fully working Issue 2 board inside. So I decided to rehome this one in a brand new reproduction case with a new keyboard membrane too.
In the bundle I recieved there was also an brand new in box VTX5000 modem for the speccy (unfortunately the ribbon cable was missing from the box though so I will be making my own adapter to plug it in). This gives the 48k a nice stand to sit on and I will be looking to see if I can use this to connect to something in the future.
I’ve not got this one wired up permanently yet as I need to do the composite video mod on it then I will probably actually move it next to the CRT screen.
I was meant to post this a week ago but was busy building up the new display unit, so it got forgotten.
Anyway, the good news is the CPC464 lives again! I stripped it all down and checked the temp of all the chips on the board and found one of the memory chips was getting very hot so that was the first job, removing all the current chips, replacing them with sockets and then fitting the new memory chips.
After this, I powered it back up but unfortunately, there was still no picture. No other chips seemed to be getting very hot but maybe the Z80 was getting a bit warmer than I expected. I swapped this over with the Z80 from my Speccy +2 though and found that wasn’t the issues either.
So at this point, I dragged out the oscilloscope and after watching some youtube videos I started to check things like the clock signal for the Z80. That checked out fine, but the data lines on the Z80 were dead and I was seeing weird 1Mhz signals dotted over various different pins. After some discussions on forums, it seemed like the Z80 was getting stuck in a loop and not running correctly. But the Z80 only runs what it is told, and that is the job of the ROM chip.
So next step was removing the ROM from the board, at this point, I placed it into my EPROM programmer and read the contents of the chip to see if it matched the original ROM file. The result of this was a chip apparently filled with “FF”. So no ROM code on there whatsoever. This chip is fried!
A new blank EPROM chip was purchased next and then programmed with the original ROM file A socket was then fitted to the board and the new ROM chip inserted. And the result of this? a working CPC464!!!
I still need to give the computer a proper clean so will be stripping apart again soon. I also hae a new drive belt for the tape player to go on (although the current one is actually still working). The tape counter button is also jammed so will look at this and may need to 3D print a new part on the resin printer to get this bit fixed.
All in all, I was pretty happy with my first computer repair. I have now placed the CPC on my new display unit and am actually going to use it with the green screen monitor as it really seems to add to the experience. The only issue with this setup was the cables are not very long from the monitor to the computer so I ordered an extension for the video and the power which I am still awaiting the arrival of the video extension. But everything else is in place and ready to go 🙂
I’m currently running low on places to put new systems until I build my new display unit (hopefully next week). So until then any system I bought needed to be small and easy to store. What better system than the Cambridge Z88 from Clive Sinclair. This system couldn’t be branded as a Sinclair system because Clive had already sold the Sinclair brand name to Amstrad at the time this was released (1987).
Managed to grab this one of eBay as untested so was expecting it to be broke and was going to try and revive it. But surprisingly it is in fully working order.
I look forward to seeing what I can get this thing do do with its built in serial port and BBC Basic.
So here we have my first donation to the archive. An Amstrad CPC464 with the GT65 green screen monitor and a nice box of games. The CPC464 itself was nonworking so this was my first attempt at bringing an old computer back from the dead. I will put together a small write-up soon of how that went.
If you have any old computers that I am missing from my collection and wish to donate them, then please get in touch 😁
So I had a small space on one of my units where a speaker used to sit. It wasn’t a big space so fitting a full-size computer in there wasn’t an option. The space was also longer than it was deep. So the solution? Fill it with a C64 Mini!
The fact I had some space, along with a £37 price tag on Amazon meant I couldn’t resist adding this one. Even though I have a real C64 and also a raspberry pi powered conversion, this thing just looked so cute.
I will do a full write up sometime in the future but it’s actually a really nice little device and comes as standard with the ability to load games direct from USB so no hacking required.
