23 Apr
2016
23 Apr
'16
5:37 p.m.
On 04/23/2016 05:09 PM, Fred Cisin wrote:
After Microsoft upgraded PC-DOS from 1.00 to 1.10,
they then
provided computer OEMs with a similar product numbered 1.25 OEMs were
expected to make their own personalized and customized IO.SYS,
MODE.COM (could also do stuff such as switching between
internal/external monitor, etc.), etc. OEMs did not even need to call
it "MS-DOS" (Zenith Z-DOS)
I have a recollection that Bill had a problem with licensing terms for
DOS--something about a minimum license fee for OEMs. They cooked up a
way to take a copy of PC DOS 1.1 and replace the IBMBIO.SYS component
and get the thing to work on a 85/88 system.
--Chuck