8 Jul
2014
8 Jul
'14
12:18 p.m.
On Tue, 8 Jul 2014, Derrick Meury wrote:
i have thought mostly running ms dos only and more
like having 286, 386
or 486 machines.
So, you do not want a 5150 (8088)
i also thought of having a machine that has tons and
tons of stuff in it like sound card, joystick stuff, video card, ram
extras, hard drive, both floppy drive sizes,
160K AND 320K? The 320K could do
160K, so that wasn't needed.
IBM never really supported 8", but, in the declining final years of their
DOS machines, they introduced 1.2M 5.25" drives (kinda a miniature 8"),
720K ("Quad") 5.25" drives (but not in USA), 3.5" 720K
"shirt-pocket"
disks, followed by 1.4M and 2.8M. Alas, the 3.9" drive didn't make it to
market. Alas, IBM never actively supported more than 4 floppy drives.
all isa slots in use by cards etc...
But, the
5150 only has five slots.
Video
FDC
Serial
Parallel
Joystick
To have more than 64K total RAM, you would have to give one of those up,
go to "multifunction" (aftermarket) cards, upgrade to the "NEW!" 5150
(that supports 256K of RAM on the planar (IBM never called it
"motherboard" due to use of the word "mother..." by the Panthers at
Merritt College)), OR, . . .
upgrade to a 5160! (EIGHT slots; some can be modified for 640K on the
planar, often came with a giant TEN MEGABYTE! Fixed drive (IBM didn't
called it a "hard" drive), but no cassette port, and the hard drive
filled up one of the floppy bays.) The slot closest to the
power supply was missing some buffering, so IBM gave a free serial port to
keep the slot plugged up.
--
Grumpy Ol' Fred cisin at xenosoft.com