From aed53b12e0fdfd771e439ec99c552ca331973fd7 Mon Sep 17 00:00:00 2001 From: Luke Kenneth Casson Leighton Date: Sat, 1 Jun 2019 04:43:45 +0100 Subject: [PATCH] add st comp unit notes --- 3d_gpu/6600scoreboard.mdwn | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/3d_gpu/6600scoreboard.mdwn b/3d_gpu/6600scoreboard.mdwn index f223cdf49..9a900561c 100644 --- a/3d_gpu/6600scoreboard.mdwn +++ b/3d_gpu/6600scoreboard.mdwn @@ -102,3 +102,17 @@ that the introduction of the NOT gate causes the latch to be more like a DFF (register). [[!img shadow.jpg]] + +# Store Computation Unit + +* Issue will close the opcode latch and OPEN the operand latch AND +trigger "Request-Read" (and set "Busy") +* Go-Read will close the operand latch and OPEN the address latch AND +trigger "Request Address". +* Go-Address will close the address latch and OPEN the result latch +AND trigger "Request Write" +* Go-Write will close the result latch and OPEN the opcode latch, and +reset BUSY back to OFF, ready for a new cycle. + +[[!img st_comp_unit.jpg]] + -- 2.30.2