From 0c57d85034fde8d2779a7462496ee821e1a6f44d Mon Sep 17 00:00:00 2001 From: Julian Blake Kongslie Date: Sun, 13 Mar 2022 18:04:04 -0700 Subject: Add a few notes. --- PLAN | 12 ++++++++++++ 1 file changed, 12 insertions(+) (limited to 'PLAN') diff --git a/PLAN b/PLAN index cc8b5d6..a4e4691 100644 --- a/PLAN +++ b/PLAN @@ -25,3 +25,15 @@ For inputs coming from a PDP-8 as opposed to the command parser, add the appropriate prefix to the memory address Broadcaster: Removes clog2(1 + number of PDP-8s) tag bits to determine which channel to send to For outputs going to a PDP-8 as opposed to the result printer, strip excess address bits + + + +For the front panel: + + We only have enough pins for a single front panel, so we need an arbiter to + control which PDP core is talking to the panel. + + Maybe the command parser should have a command for controlling that arbiter? + + Or we could repurpose some of the switches on the panel to control it? The + DF and IF switches are sort of an obvious choice here. -- cgit v1.2.3