[Coco] V.PAGE 46551 and 46552 drivers

[George Ramsower]

----- Original Message ----- 
From: "L. Curtis Boyle" <curtisboyle at sasktel.net>


>>

>     That may be true for disk controllers, but RS-232 does allow multiple 

> cards (the Comm-4 board from Alpha technologies had 4 ports, as an 

> example). The device descriptor determines it by the address of the card, 

> and each get's their own buffer (especially if using SACIA for 6551 based 

> ports, and DACIA for 6552 based ports). When we used to run the Coco 

> 3/Nitros9 system here at work, we had 3 parallel ports, and 8 serial ports 

> (4 6551, 4 6552 (2 ports per chip on the latter), and we drove 8 ADM 

> terminals from those.

>


 Are the drivers and descriptors available for these chips? I've been 
wanting to build a new board for my coco using one of these chips to replace 
the 6551 chips I'm using now.
 My current board has three of the 6551 chips and from what I hear, the 
46551 and 46552 are superior.
 I use stock OS-9 L2 on a 512K CC3.

Thanks,

George