dehart@darth.UUCP (03/24/87)
[ ]
I just picked up a used Compaq-Plus. I have a few questions about it.
1) Can the clock speed be increased? If so, how fast?
2) Will a NEC v20 work in place of the 8088?
3) Will an EGA board work with the Compaq's video card still installed?
I want the Compaq screen to display text while the graphics are
displayed using the EGA board.
4) I needed to replace the Compaq hard disk drive. I used a Seagate
ST-412. I am guessing that the Seagate uses more current than the
3 1/2" drive. Will the power supply handle the drive or will it
die?
Thanks, Ed DeHart / wa3yoa
{pitt | bellcore}!darth!dehartperkins@bnrmtv.UUCP (03/28/87)
> I just picked up a used Compaq-Plus. > > 1) Can the clock speed be increased? If so, how fast? Yes, it can, but it's not easy to do. Your best bet would be to check out one of the stock PC accelerator options. You'll probably be able to get 6 MHz or so. > > 2) Will a NEC v20 work in place of the 8088? Yes. You'll see about a 3% speedup in general, and more on code that uses multiply/divide or string operations intensively. The real bottleneck is the 8-bit bus; the V20 can't change that. > > 3) Will an EGA board work with the Compaq's video card still installed? > I want the Compaq screen to display text while the graphics are > displayed using the EGA board. No; they use the same address space. You may also have to cut a trace on the motherboard to make the EGA card work, since the early models assumed a Compaq video card had to be present. (This isn't unreasonable, considering the built-in display -- which, by the way, will be useless with an EGA card.) > > 4) I needed to replace the Compaq hard disk drive. I used a Seagate > ST-412. I am guessing that the Seagate uses more current than the > 3 1/2" drive. Will the power supply handle the drive or will it > die? I don't know this one. Check the power ratings for both drives and compare them. > > Thanks, Ed DeHart {pitt | bellcore}!darth!dehart -- {hplabs,amdahl,3comvax}!bnrmtv!perkins --Henry Perkins It is better never to have been born. But who among us has such luck? One in a million, perhaps.