Quote:Uhm, page 41 section 3.4.3 Frame Buffer Pins;
MCLKA and MCLKB
Can I start smiling yet or am I misunderstanding what these two do?
No, no; the thing that you noticed is only a special thing about how the memory controller on the VSA100 works. In simple words, it does a 128bit acces to the RAM, but divided in half; first 64bits (half of the total amount of chips) are assigned to the "A" port and the last 64bits are assigned to the "B" port. Do not be confused though, there are not 2 independent memory controllers, but 2 units for multiplexed datas (data input and output to and from the video RAM).
Quote:Nice Work Komponent !
It's nice to see that people like you ( and you're unfortunately the only one i know ) are still tryng to do the memory modding on the VSA chip.
Therefore, my V5 5500 is on the way to you. At the end of the Week, you will have the needed "ingredients" to start the project.
May the voodoo spirit be with you !
Br.
Radu.
Thanks Radu for your kind words, allthough there was not anything special there; Hank Semenek had published the points for A11 adresses on a Voodoo5 5500 AGP a long time ago; unfortunately he had not marked the chip-select pins too; I saw no research done for the Voodoo4 PCI PCB, so I shared my results; it could be of some help.
I guess it would not be wrong to let the other members here know that we (me and Radu) talk for some time now about teaming up to do future 3DFX modding. Radu offered to sacrifice his only Voodoo5 5500 AGP as a test platform for my work. I want to thank him here! As we talked in private, I will be happy to accept for him to send me the V5 as soon as we find the new RAM chips; no point to send it to me sooner, because allthough we both searched in our homme-towns, we have not found 2xGeForce2 cards with 64Mb SDRAM, 128bits, 8 chips for each one. If we proceed to do the mod, we will share the results on this forum.