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Switched interrupt management to a new set of Trigger functions and static Trigger objects, eliminating the old InterruptQueue of constantly created/destroyed InterruptEvents

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Jeff Parsons 2016-10-13 10:20:11 -07:00 • committed by Jeff Parsons
commit 686396d726
6 changed files with 255 additions and 254 deletions
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4
modules/pdp11/lib/cpuops.js
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@ -1704,8 +1704,8 @@ PDP11.opWAIT = function(opCode)
*
* 1) opWAIT() sets a new opFlags bit (OPFLAG.WAIT)
* 2) Rewind the PC back to the WAIT instruction
* 3) Whenever stepCPU() detects OPFLAG.WAIT, call checkInterruptQueue()
* 4) If checkInterruptQueue() detects an interrupt, advance PC past the WAIT and then dispatch the interrupt
* 3) Whenever stepCPU() detects OPFLAG.WAIT, call checkInterrupts()
* 4) If checkInterrupts() detects an interrupt, advance PC past the WAIT and then dispatch the interrupt
*
* Technically, the PC is already exactly where it's supposed to be, so why are we wasting time with steps
* 2 and 4? It's largely for the Debugger's sake, so that as long as execution is "blocked" by a WAIT, that's