[[File:Jdvpa6 moustache-FPGAmstrad testbench.png|thumbnail|jdvpa6_moustache.dsk testbench]]
==== GA: Sorgelig formula ====
GA instruction-timing formula :
--.wait_n((phase == 0) | (IORQ_n & MREQ_n) | no_wait)
if compteur1MHz > 0 and (IO_REQ_R='1' or IO_REQ_W='1' or MEM_RD='1' or MEM_WR='1') then
WAIT_n<='0'
I put it inside OSD menu WAIT_n:quick in r005.8.16.8.5c1
Does pass easily plustest.dsk test 5, but not 9. Mister Amstrad does pass test 9.
Another great Sorgelig formula btw :
-- Sorgelig formula : wire acc = (MREQ_n | ~RFSH_n) & IORQ_n;
MREQ<=not(MREQ_n or not(RFSH_n));
=== Z80 ===