3 Nov
2005
3 Nov
'05
5:11 p.m.
On 11/3/2005 at 8:01 PM Allison wrote:
8274 is the intel branded NEC D7201, and it's not
essentually a Z80 sio
it's IS a SIO save for it supports 8080/8085/8088 interrutpts instead.
Even the register addresses and functions are the same save those for
the interrupts.
Someone once told me (could be urban legend) that the same guy designed
both chips--once for Zilong and then for Intel..
Cheers,
Chuck