CV64 RAM

[Oli_hd]

It says "Number of Words = 256k" & "Bits Per Word = 16"
meaning its 512 thousand bytes but on a 16 bit data bus (so times the number of 16bit words by 2 to get what would be on an 8 bit bus, 8 bits being in a byte)

[Oli_hd]

The CV64 has a maximum memory of 4MB with 8 sockets, which means each chip needs to be 512k. The S3 Trio is a 2MB card with 2 chips, which means each chip is 1MB.

Ermm on that auction you linked to the picture shows two socketed ram chips and two soldered chips... making four.
(the two bottom right below the ROM are ram chips too)
That would make 512kb

the chips from the S3 cards have different part numbers to the chips on the CV64

If you list the part numbers I will have a look on the net and see if I cna find the pinouts to the ram chips.

I'm very nervous about putting these chips in my CV64.

Hehe, dont blaim you.  :-D

Ive gotta fix my Picasso IV by desoldering a GPU from a cheap ass PC PCI card and soldering it onto the IV... I aint looking forward to it but the IV is dead at the moment..
Still best of luck with the RAM

[Oli_hd]

In the Posting Of The Beast (Oli, check your post count  )

Woohooo, Im a beast baby  :-D

Oh it looks like the CV64 can't do 1280x1024x24. I don't have a CV64 manual but checked the CV64/3D manual on amiga.resource.cx and 1280x1024x24 isn't listed as a supported resolution. So I have set it to 1280x1024x16 and it works fine. This screenmode didn't work before since it requires 2.5MB of RAM so the extra memory must be working

Goodo, I was gonna say you should try reinstalling cybergfx as it may set something on installation saying the card couldnt do better than such a res but if you have made a new screen res that needs 2.5meg and it works it must be fine.
First thing I would have done is go into showconfig and see how much address space its using, 2 meg + 64k and it aint, 4meg+64k and its good.
(you could have also added it as RAM to the system)

But anyway you dont need any of that.
Glad it didnt end up in a big pile of smoldering ash. :lol:

Seems the bboah agrees, 1280 x 1024x16@75Hz is the best it can do in true colour.... time to upgrade me thinks ;-)

[Oli_hd]

Oli_hd wrote:  Woohooo, Im a beast baby      Not any more

 :-( I have no stamina, thats my problem

I did try showconfig but it showed 0MB  I'll try again now I've got the 4MB on board.

Ermm.. thats odd.

The only way I can think to upgrade is with a Mediator + Voodoo, but I think I'd rather keep this A4000 as classic as possible

Going off topic a bit but you can get both the G-Rex and the Mediator as replacement bus boards for the A4000, keeping it in its original case.

Ive got a prometheus and am having that problem, using it in any of my miggies blocks all other Zorro cards and there just arnt enough cool PCI cards for me to do that, hence its been sat in its box since I bought it about four/five years ago.
Gotta get a right angled adaptor for it so I can fit a Voodoo, loosing only two Zorro slots.

That said the CV64 and my current gfx card, the GVP Specky 24 are great cards.