[net.micro] TRS-80_Maskable_interrupts

sda@pyuxnn.UUCP (08/15/83)

My news is more a question than a news item. I have been working with
a TRS-80 Model III micro trying to mask out certain interrupts thru the
hardware. According to documentation available, a reset bit in port E0
will deselect a certain interrupt. I have chosen to inhibit the 
RS-232 xmit buffer empty interrupt. The program I am writing will keep
track of all system interrupts and still sees this type of interrput 
with it deselected. This is supposed to be turned off by clearing bit
4 in port E0. Clearly it is not.  Any information on this type of
problem ??