[comp.sys.ibm.pc] IBM PC-1 Upgrading

27003_1406@uwovax.uwo.ca (08/31/89)

 I have two basic questions.  Anyone experienced with the ORIGINAL IBM PC
(64K motherboard, single-sided FD) may be able to answer:

	1. Can a 3.5", 720K diskette drive be used on this system WITH THE
	   ORIGINAL IBM controller?  (IBM DOS V3.2 started supporting 720K
	   diskette drives).  Nowadays, most drives are half-height.  What
	   mounting problems would I anticipate when I remove the existing
	   full-height drive? 

	2. The system has a 64K-256K memory expansion card which was originally
	   meant to take 64K bit RAMs.  CAN 256K BIT RAMs BE USED INSTEAD?  Can
	   one bank have 64k bit RAMs and two of the remaining three banks have
	   256K bit RAMs?  This would give me 640K altogether (64K motherboard +
	   64K + 256K + 256K).

 Thanks in advance...
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Les Flodrowski                                   CA: les@vaxi.uwo.CA
Social Science Computing Laboratory          Bitnet: les@uwovax.BITNET
University of Western Ontario                  UUCP: les@julian.UUCP
London, Ontario, Canada, N6A 5C2                     (...!watmath!julian..)