mcafee@elmst.enet.dec.com (Steve McAfee) (02/06/91)
Can anyone describe how chip memory is used by Amiga UNIX (SVR4)? How are the custom chips being used (if at all)? Just curious... -steve
ford@amix.commodore.com (Mike "Ford" Ditto) (02/09/91)
mcafee@elmst.enet.dec.com (Steve McAfee) writes: > Can anyone describe how chip memory is used by Amiga UNIX (SVR4)? > > How are the custom chips being used (if at all)? Things like this are being discussed in comp.unix.amiga. For example, in <796@amix.commodore.com>, I wrote: > Also, remember that experienced AmigaDos users (and probably Commodore > marketing types, too) think of a basic A3000 (4 Meg fast, 1 Meg chip) > as a "5 Meg" system, while Unix consideres this to be a "4 Meg" > system. > > The Amiga's "chip" memory, to Unix, is like the frame buffer memory on > a graphics card. It is never used for the system's virtual memory. > It is used for floppy and sound DMA, copper instructions, and > (primarily) bitplane memory for the many virtual screens. This isn't a particularly hardware-intensive topic, so I'm redirecting followups to comp.unix.amiga. -=] Ford [=- "But everybody wants a rock (In Real Life: Mike Ditto) to wind a piece of string around." ford@amix.commodore.com - They Might be Giants, uunet!cbmvax!ditto "We want a rock" ford@kenobi.commodore.com