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.
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.