🚀 go-pugleaf

> -Fellow posters,
>      Can anyone tell me how to expand the memory in a PC beyond 640K?  I have
> a regular video board requiring 16K and an 8K BIOS.  No other peripherals
> [Crequire addressable memmory.  By my calculations, that leaves me with 1000K.
> I have a clone with 640K installed on the motherboard.  Can I expand with
> piggy-backing?  If so, how do I let DOS know that I have the extra memory
> installed?  Thanks in advance for responses.
>                                        -Darren Friedlein
> ...ihnp4!ethos!darren

First of all, I thought that the standard video (CGA unless you are talking
monochrome) was 32K, and my understanding was that the system ROM took 64K.
At any rate, there is a company that makes a board called MAXIT that allows
use of both the contiguous memory about 640K (up to graphics memory) and the
non-contiguous area above the graphics memory (unused normally).
Look in the January Byte for an add.  I don't remember the name of the company.
Basically, they go through some contortions to make programs that don't know
anything about this board still work; memory resident programs such as
RAM disks can run in non-contiguous memory (without knowing that they are), and
any program can use the extra 96K contiguous memory above the 640K max.

John Diamant
Systems Software Operation	UUCP:  {hplabs,hpfcla}!hpfclp!diamant
Hewlett Packard Co.		ARPA/CSNET: diamant%hpfclp@hplabs.HP.COM
Fort Collins, CO