darren@ethos.UUCP (Darren Friedlein) (12/30/86)
-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!darrendiamant@hpfclp.HP.COM (John Diamant) (01/10/87)
> -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