Picasso IV Chip Upgrades

[therail]

- I get some reddish speckling in white areas of some games

i seem to be getting this problem too. jjb has checked all my amiga hardware; amiga 4000 and ram, csmk3 and ram plus the daughter board and he found no faults! i am at a loss as to wot to do next. i have tested with 2 psu and get the same result. any ideas guys?

[therail]

right update here. changed the jp3 and 5 and that has gotten rid of the dots problem. next problem tho, (may relate to the fact that it is now in 12bit flifi mode) i seem to get some sort of blurry or flickering effects when the screen is in motion (sort of like interlace type effect).is this due to the colours palette being downgraded?

[therail]

Hi

Here are the following jumper combinations i have tried:

JP3 OPEN
JP5 OPEN

JP3 OPEN
JP5 CLOSED

JP3 CLOSED
JP5 CLOSED

JP3 CLOSED
JP5 OPEN

(NOTE: JP4 is always OPENED in these combinations).

From these results, i always seem to get flickering/sparkling red dots when the JP3 is CLOSED (or in 24 bit Flifi mode). But Flifi is ok when JP3 is OPEN (or in 12 bit Flifi mode). Can anyone explain these results?!

EDITED

[therail]

ooops i muddled myself up there. please check the edit! :d i got the JP3 combination mixed up a bit!

[therail]

the MACH chip in my Picasso got replaced by a newer one by JJB himself so now worries in that department. the thing i dont get is JJB examined the board and even tried to himself to develope the trouble i get and he found nothing!!!! he couldnt find anything wrong. i also gave hime (as well as the picasso) my amiga 4000 plus daughter board, my csmk3 and all the rams (both mobo and acc.), and he found nothing wrong with anything!!!

[therail]

jjb also used hi a4000 to test with too and had no troubles