From: Luke Kenneth Casson Leighton <lkcl@lkcl.net>
Date: Sat, 1 Jun 2019 03:43:45 +0000 (+0100)
Subject: add st comp unit notes
X-Git-Tag: convert-csv-opcode-to-binary~4669
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=aed53b12e0fdfd771e439ec99c552ca331973fd7;p=libreriscv.git

add st comp unit notes
---

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]]
+