If at some point in the project you detect a problem go back and check your work carefully. Are all the ICs inserted with the same orientation of pin 1? Are all of the pins correctly inserted in the socket holes? Look for shorts between pins that you've soldered. One of your memory components may be bad try exchanging rows and running the ml monitor to see if you can get at least an '03' for top bank thereby narrowing the location of the bad part to bank 4. If you still have a problem back out the work you've done until the machine works ok and seek some technical help.
For those of you who don't have access to an inexpensive source for the parts used in this project or need more detailed instructions on how it should be performed we are putting together a kit of parts including the sockets, capacitors, and memory ICs, along with complete step by step instructions and a component layout dia am complete for only $50.00 for a 64k upgrade and $100.00 for a 128k upgrade. If you want the upgrade but don't wish to do it yourself we can arrange for our technician to do it for $75.00/64k and $150.000/128k including all parts and labor. Please see ordering information on page 13.
Yes we're working on an even more extensive memory expansion! An internally mounted board connecting to one of the expansion connectors containing 256K. Look for details of this project in the coming months.
In this department a listing of programs and hardware we believe to be compatible with the B-128 computer is presented. At this time only a few of the products listed have been reviewed. If you have any additional information concerning B-128 compatible products please forward it so that it may be added to this listing.
The first section is a listing of products from England approved by Commodore UK.
