On 9/19/07, Syren Baran <[EMAIL PROTECTED]> wrote: > Hi list, > > i recently decided to have a closer look at the ati specs and > ati-driver. > Since i havent done any low level gfx card coding for over 10 years i > got some stupid newb questions. > > The recently released amd specs use the description [somevar]:offset to > describe the address for registers while radeon_reg.h uses the 0xoffset > description. Where can the numerical values for [somevar] be found? > > Also, how it is possible for 32bit registers to have adjacent offsets? > >From the specs, e.g. MCIND:0x4 and MCIND:0x5 ? > Not that the description for MC_FB_LOCATION seems to make any sense to > me.
those are indexed/indirect registers. there are direct access and indexed registers. direct access regs are accessed directly from their offset. indexed registers are accessed via an index/data register pair. you write the indexed register you want into the index and then you can read/write it via the data register. MCIND stands for Memory Controller INDex. Alex _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
