From: lkcl <lkcl@web>
Date: Thu, 30 Apr 2020 18:56:58 +0000 (+0100)
Subject: (no commit message)
X-Git-Tag: convert-csv-opcode-to-binary~2778
X-Git-Url: https://git.libre-soc.org/?a=commitdiff_plain;h=d22f886068be267f39e30f0b635c28fb09719b57;p=libreriscv.git

---

diff --git a/3d_gpu/architecture/6600scoreboard.mdwn b/3d_gpu/architecture/6600scoreboard.mdwn
index 0b75b2985..44a70f106 100644
--- a/3d_gpu/architecture/6600scoreboard.mdwn
+++ b/3d_gpu/architecture/6600scoreboard.mdwn
@@ -21,6 +21,8 @@ signals combined are dropped, the ReadRelease is dropped.
 Note that this is a loop: GoRead (ANDed with Busy) goes through
 to the priority picker, which generates GoRead, so it is critical
 (in a modern design) to use a clock-sync'd latch in this path.
+The original 6600 used rising-edge and falling-edge of the clock
+to avoid this issue.
 
 [[!img comp_unit_req_rel.jpg]]
 [[!img group_pick_rd_rel.jpg]]