Apple II sprite boards

From: Charles P. Hobbs <transit_at_lerctr.org>
Date: Fri Jul 14 14:06:31 2000

On Fri, 14 Jul 2000, Tony Duell wrote:

> > > The TMS9918A was the TI/994A graphics controller chip, IIRC.
> >
> > The sprite board was almost a whole TI home computer on a board,
> > at least graphics wise. I never got to play around with one, but I
>
> Apart from the 9918 and some RAM, what else was there in the 99/4A
> graphics system? The 9918 did all the sprite stuff internally IIRC.

It had a sound chip (TMS9919, I think) as well as a proprietary form
of memory called G-ROM (for Graphics Rom).

N.B. stock TI 99/4A's had very little RAM directly accessible from the
CPU (about 256 bytes!) All programs were stored in either G-ROM or
the 16 K of RAM accessed via the 9918 VDP.
Received on Fri Jul 14 2000 - 14:06:31 BST