Path: utzoo!attcan!uunet!dalcs!lane From: lane@dalcs.UUCP (John Wright/Dr. Pat Lane) Newsgroups: comp.sys.ibm.pc Subject: Speeding up old PC's Keywords: CPU clock speed, V20 Message-ID: <3009@dalcs.UUCP> Date: 25 Sep 88 08:28:14 GMT Organization: Math, Stats & CS, Dalhousie University, Halifax, NS, Canada Lines: 47 I have two old 4.77 MHz PCs...they're true blue IBM's...one is a "5150" which is, I believe, a PC-2 and the other a "5160", an XT. I'm wondering what I can do to jazz them up, particularly with regard to CPU speed. Could I replace the CPU with an 8MHz 8088 or V20? Would I have to change the crystal? how about the RAM memory? Any suggestions on other things I could with these old clunkers (besides boat anchors :-) Technical details on the 5150: Intel 8088 CPU, no co-processor 256K on motherboard (MOSTEK 8424/MK4564N-20 if I'm reading the chips (and my notes) correctly...some chips have "8344" instead of "8424") AST Six Pak Plus with 384K (MicroTek 4264-15's ...I presume this is 150nsec memory while that on the motherboard is 200?) PERSYST monochrome display adapter/printer port...would the RAM on this card be an issue? Process Traveller full height floppy and controller from "TPA"? Miniscribe 10Meg hard drive (very noisy, even after I fiddled with the static strap) with an IBM 1501492 controller...no format routine in ROM that I can find 63.5 Watt power supply...would this not be a candidate for upgrading? ROM BIOS dated 10/27/82 HD controller BIOS contains "5000059 (c) IBM 1982 08/16/82" Also in ROM space "IBM PC Basic ver C1.10 copyr. 1981 25-Apr-81" Technical details on the 5160: AMD 8088 with no co-processor 256K on mother board...didn't record what the chips were STB RIO PLUS II multifunction board with 384K RAM, uT4264-15s and MM4164A-15's Hercules monochone graphics/printer Tandon TM100-2A full height floppy with controller (don't know what kind) Tandon TM502 hard disk with an Adaptec controller (BIOS has ACB2000 fmt pgm) 130W power supply BIOS dated 11/08/82 What about changing the full height floppies for half height devices? Much appreciate any advise or general info on what I've got here. -- John Wright ///////////////// Phone: 902-424-3805 or 902-424-6527 Post: c/o Dr Pat Lane, Biology Dept, Dalhousie U, Halifax N.S., CANADA B3H-4H8 Cdn/Bitnet: lane@cs.dal.cdn Arpa: lane%dalcs.uucp@uunet.uu.net Uucp: lane@dalcs.uucp or {uunet,watmath,utai,garfield}!dalcs!lane