Speed Up Load time
19-Oct-91 03:17:43
Sb: #37599-Speed Up Load time
Fm: Ken Cooper 73627,2334
To: Gayle Lee Fairless 71571,321
Gayle, I un-soldered the rightmost female slot (where the bboard normally
sits) from the Amiga motherboard. Got 2 new XT slots wired together with
leads going under this bboard slot to the 62 pins. Re-installed this group
of 3 XT slots back onto the Amiga motherboard. There is about 1/8 inch gap
under this bboard slot where wires could fit easily. The 2 extra XT slots
are anchored to the backwall with 3/8 inch metal standoffs, so in essence,
they are floating above the Amiga motherboard (between the bboard and the
power supply).
This was done a couple of weeks ago. This better method replaced the setup
whereby I had ground down the top plastic of the bboard slot, exposing the
62 tips. The 2 XT's were wired to the tops of the exposed tips. This worked
for a couple of years, until recently, when I had put the bboard back in,
and 2 tips got caught and were pushed down to the bottom of the slot! After
pulling them back straight, I found my TrueVision Vista board to start
displaying weird video activity. At this point I knew there was going to be
more connection problems.
I then decided I would try to remove the bboard slot right off from the
Amiga motherboard, and make any connections to the pins under the plastic.
This way the tips aren't mucked with. This method was a lot easier than the
first. Grinding off the plastic from the top of the slot to expose the
tips, with a Dremel tool was not a piece of cake.
With this newer method, the hardest part is first removing the rightmost XT
slot off the Amiga motherboard. Un-soldering the 62 pins was easy once I
decided to use compressed air to blow the molten solder thru the
motherboard (which then piled up onto the back of the XT slot). Once all
the pins were loose, one pulls the slot off the motherboard. Just use a
xacto knife to scrap off the caked solder. With patience and soldering
skill and 12 hours, anyone could do it 🙂
Ken Cooper – Vancouver