[Coco] Coco 4

[Neil Morrison]

I hadn't even considered DMA. The no-halt design of some controllers
would be nice however.

Neil

----- Original Message ----- 
From: <peak at mail.polarcomm.com>



> The memory of an ISA card would be decoded using coco's CTS

> line and the I/O using coco's SCS line. If you really want an

> ISA card adapter for the coco I will see if I can design one

> at least as far as a schematic diagram. Warning* I wont even

> attempt using DMA though**. The hardware part of an ISA card

> adapter for 8-bit ISA cards that dont use DMA should not be a

> problem. I have been wanting to do this anyway.

> Note: Many ISA cards need a 14.318Mhz signal.

> The coco1 and coco2 have this frequency but coco3 does not.



> Eric