🚀 go-pugleaf

mhughes@loft386.uucp (Mike Hughes) asks

 >Has anybody written a working interrupt-driven routine in JPI v 2.0?

JPI have (look at PROCESS.MOD).  I have written some in ver 1.1x, but not tried 
them in version 2 yet.

 >1. The manual says that the module [priority] on PC systems is a bit 
 >mask and then falls forever silent.  I assume this mask refers to the 
 >IRQs with bit 0 corresponding to IRQ0, but is this correct

Yes.  Note that the release 2 manuals are appallingly bad (at least mine are.  
They may hvae redone them by now).

 >and is it bit-on or bit-off to disable a given interrupt?

Bit-on disables.  eg MODULE AllDisabled [0FFH];

 >2. What, exactly, is the "interrupt vector" required by IOTRANSFER?  An 
 >IRQ number, an index into the jump table (0CH for Com1, etc.) or 
 >something entirely different?

The interrupt "number" for the PC.  eg 08H for raw time, 1CH for chained timer, 
09H for keyboard ...  I suppose you call that the index into the jump table.

 >3. What do the following link error messages mean?
 > 
 >SYSTEM$TRANSFER unresolved...
 >_new_priority unresolved...

maybe another version 2 bug?  Don't know.  You may have to install for the 
"multithread" model to be able to use IOTRANSFER with version 2.

I have some notes and examples, prepared for my students, of IOTRANSFER use on 
PC's - would you like a copy?
 




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