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Hi, I bought the following: http://www.datapro.net/products/ps2-panel-mount-to-pcb-motherboard.html It has 4 colors: Red, Yellow, Orange, Brown Would anyone know how they map to the PS2 pins +5V, Clk, Gnd, Data? I have the pinout diagram for my motherboard, so obviously I need to confirm...

Hi, I have got my hands on a DFI Itox G486VPC motherboard: www.dfi-itox.com/pages/support/mbd/486vpc/G486VPC.PDF It has PS2 mouse connector and COM ports built into the motherboard. Is it possible to get a rear bracket that has PS2 connector plus 1 or 2 COM ports, for this motherboard? Or a...

Hi, Thank you to ChrisCwmbran for writing a really good intro to EPROM programming. I have some real newbie questions about EPROM programming. 1) I am guessing that different companies manufactor the same standard EPROMs and so they end up with similar names. Could I assume the following are...

Hi, I have got a 486DX33 with the following bios: MR BIOS (r) Copyright (c) 1993, Microid Research Inc. Ver: V1.54-HT34407 The FIxed Disk options for this BIOS are rather primitive. Looks like there is no ATA support. It has: Type Cylinders Heads Precomp Landing Sectors Translate Xfer-Mode...

Hi, I have read on the internet that the -5V was rarely used at all. Would there be a list of ISA devices that actually used the -5V rail?

Hi, I would be interested in knowing the best possible IDE controller to use for my 486 computer. It looks like all ISA IDE controllers only support PIO transfer modes? Was there any that supported MWDMA-2? Thanks Tom

Hi, We know that IBM made some mistakes designing the IBM PC/XT. One mistake was mapping interrupts to Intel CPU reserved IRQ numbers. Why didn't IBM design the ISA bus with fixed memory / IO Port locations? IBM could of assumed the PC would never have more than 8 slots. So the ISA socket could...