scsi rll trade off questions?

Ken Mitchum km at cadre.dsl.PITTSBURGH.EDU
Tue Jul 11 08:51:55 AEST 1989


>Item 5 in the list above is the current biggest concern to me.  If the
>ST0x is not a DMA device what happens when I try to run software like
>zmodem downloads that want to do serial and disk I/O simultaneously?

The ST01 does support interrupts, so there is no need for the processor
to "wait" for a transfer to take place. DMA was probably left off the
card 1) to save money and 2) because there is no effective way in a DOS
environment to take advantage of it.

 Ken Mitchum
 km at cadre.dsl.pitt.edu



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