RAM upgrade "plug in" 4MB - Pre-Orders - discount price

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RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Sat Mar 21, 2015 10:19 am

PLEASE NOTE PRE-ORDERS HAVE NOW ENDED & THE KIT IS NOW ON GENERAL SALE IN MY WEBSTORE

I am taking ore-orders for the "plug in" 4MB kit. Currently £45. This is actually less than they cost to make, as I want to get a few orders in to at least save my ever growing credit card bill! So this offer is only valid until they go into production which will be in 1 - 2 weeks time approx. Price after production will be £65.

pcb.jpg


I will take some better images over the weekend. The board shown with the DRAM, also has a break out board for the shifter where the cable links to it.

I say "plug in" as the MMU part does plug in. but with 90% of the ST's I have seen having a soldered in Shifter, That part won't be plug in.

There are 2 options for the Shifter adapter. Ideally, Shifter is to be removed, shifter soldered into the adapter PCB, PCB soldered into motherboard. This way is best and will fit in the shifter can.

Secondly, The PCB can have a socket , so assuming your shifter is in a socket, you can remove it, and place it into the adapter PCB, and plug it into the motherboard. The problem is, the height of having in effect 2 sockets, makes it to high to close the shifter can. This may cause height issues with the metal shielding. I have not tried it, but it will probably *just* fit if the top of the shifter can is cut off.

The shifter board can be supplied as a kit (by default) or with socket and header pins assembled for a extra £5. Cable lengths do vary also, but I am buying in various lengths. The MEGA needs the longest cable (30cm or so) most STFM only need half that length, or less. Different revisions of ST motherboard can require a longer cable. But that will be a option for people to select another time.

The upgrade should fit any ST/MEGA machine and offers 1MB/4MB switching. The DRAM is also 60ns , so anyone thinking of buying a V3 booster (be it probably a year away) should invest in this board as it will have option to speed up ST RAM. To which, this kit is a must.

Please note, if you have a early ST (external disk drive) You MMU may not support 4MB. Some early MMU's only offered 512K, others 1MB only. So it is something to keep in mind also. I do sell tested 4MB MMU's in my store if anyone needs them.
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Last edited by exxos on Fri May 22, 2015 9:33 pm, edited 1 time in total.
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby spiny » Sat Mar 21, 2015 10:24 am

put me down for one please :)

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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Sat Mar 21, 2015 10:31 am

spiny wrote:put me down for one please :)


Awesome :cheers: can you PM your email address and I will send invoice later :)
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby spiny » Sat Mar 21, 2015 10:54 am

One quick question though, one of my STs has the HD upgrade that ralcool made, will this get in the way, or should it work with the RAM upgrade ? No bother if it's not compatable, I have a few other FMs I can use :)

2015-03-21 10.28.23a.jpg

2015-03-21 10.29.00a.jpg
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Sat Mar 21, 2015 12:16 pm

Looks like the wires are just soldered on top of the Shifter so the shifter just gets plugged into the new pcb. So can't see any problems.
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby 1024MAK » Sat Mar 21, 2015 4:49 pm

One for me too please.

I intend to fit it in a Mega 1. Please supply the shifter board as a kit and with a MEGA length cable (you said 30cm or so) :D.

I will send you a PM shortly, as I will take a look at your shop first.

Mark
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Sat Mar 21, 2015 10:05 pm

Got your PM (& spiny) thanks, I will add them to my store tomorrow as will be easier that way. IIRC it was 50cm, I think the 30cm was to short, but will double check on that anyway.
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Sun Mar 22, 2015 4:41 pm

MMU4MBF.JPG


This is the kit installed in a typical STFM. The cable is a little to long on that, but got some other size cables coming :)
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby NikolaL » Mon Mar 23, 2015 11:03 am

One for me too please.
Im about to fit this mmu board memory upgrade to my 520 stfm like it has same locations of mmu and shifter, picture above.
This mmu memory upgrade is way much better then one i have took out, as STfm gift to me.
(I need instructions too,i wish to dissable 32 chip/1024kb memory that is under PSU)

I will send you a PM shortly, and check your store.

Nik
Place for 5 volts, atleast 1000uF 6.3V or 16V capacitator into board at your psu power plug :wink:

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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Mon Mar 23, 2015 11:51 am

NikolaL wrote:One for me too please.
Im about to fit this mmu board memory upgrade to my 520 stfm like it has same locations of mmu and shifter, picture above.
This mmu memory upgrade is way much better then one i have took out, as STfm gift to me.
(I need instructions too,i wish to dissable 32 chip/1024kb memory that is under PSU)

I will send you a PM shortly, and check your store.

Nik



I will be doing fitting instructions for this kit probably next week, so don't worry :)

Old RAM (under PSU normally) should be taken out, but you can disable it by lifting some resistors and connecting to 5V. While it possible to use machine that way, it does put more stress on the PSU.
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby NikolaL » Mon Mar 23, 2015 9:20 pm

Good. I order and pay for this board, im waiting for delivery.
Atm im talking to people + doing my own research...
Last edited by NikolaL on Sun Apr 05, 2015 5:55 am, edited 1 time in total.
Place for 5 volts, atleast 1000uF 6.3V or 16V capacitator into board at your psu power plug :wink:

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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Tue Mar 31, 2015 3:19 pm

Not much news but, news nonetheless.

4mpl1.jpg


New boards are made. Parts are about to be shipped for assembly, so last chance for the discount price offer as I will be sending payment for assembly shortly.

Thanks to the few who already pre-ordered. Helps to keep down my credit card bill somewhat for one thing :)
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Thu May 07, 2015 1:53 pm

4mb1.jpg


Girlfriend just sent me that image. So they have finally arrived :D I will pick them up over the weekend. So should be able to start testing them out next week. I'm pretty busy with regular work of late so my time is somewhat limited currently. But will try and get the install instructions done and start shipping out as soon as possible.
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Mon May 11, 2015 1:05 pm

Small update. I am testing these boards out today :). I will try my best to ship out this week (aiming for Thursday). Once I got them shipped I will start on the docs. Though its pretty straight forward how they fit together anyway :) I'm going to let each board run at least 1,000 RAM test cycles, which takes a few hours. So they should be warmed up enough to ensure they are stable :)
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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Thu May 14, 2015 2:57 pm

All remaining orders have now been shipped :)

I have been working on the install docs today. There are probably typos but I will be tweaking it about meanwhile.

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Re: RAM upgrade "plug in" 4MB - Pre-Orders - discount price

Postby exxos » Fri May 22, 2015 9:29 pm

The 4MB MMU RAM upgrade is now on sale for £65 in my store. This includes the MMU RAM PCB with 4MB DRAM. The shifter adapter PCB, pins, sockets etc is supplied also.I have around 30 in stock in total.

I have tried to keep the price as low as possible with these kits to make them affordable. Believe me when I say I am not making much on these things. I half wish I had not developed this stuff as it simply cost so much. I literally have like £2,000 worth of stock just in those 4MB kits alone, nevermind all the other kits I have in production :roll: So if I go quiet on the "new kits front" for a while, then I hope people understand why. With summer almost here, I will be mostly outside doing "outside" related stuff, so my Atari time will go down a fair bit shortly.

Anyway, these kits will fit any ST with a socketed MMU. If the shifter is in a socket then the kit becomes totally plug in. Hopefully people will buy one of these instead of going for the dreadful Marpet simm upgrade crap.

http://www.exxoshost.co.uk/atari/last/store.htm

I can fit these any of my kits to peoples motherboards if they prefer me to do it. Though as I am in the UK, overseas postage could end up costing a fair bit. Though people do ship me motherboards and other stuff sometimes anyway :)
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http://www.exxoshost.co.uk/atari/ All my hardware guides - mods - games - STOS
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