Subject: Re: AV300, AV400, and AV4300 series address map and hardware specs
To: Chris Tribo <ctribo@college.dtcc.edu>
From: Matthew Hudson <mhudson@cox.net>
List: port-m88k
Date: 09/15/2003 23:03:55
Yes the 85/9500+ use the 88410

-Matt

Chris Tribo wrote:

>some other notes
>
>the Z8536 is listed as the CIO, who's job it is to provide a programmable 
>interval timer and a time of day counter (RTC?)
>
>the SCN2661 is the keyboard controller.
>
>Since DUART2 on the AV400 series only uses one port, some of the 
>extra register space on the chip is used to provides data strobe and 
>data select lines to the parallel interface chip, which I can't see 
>because it's under the frame buffer. Interesting method of flow control.
>
>the speaker and associated counter/timer are programmed through registers 
>on DUART1, odd.
>
>LANCE AM7990 ethernet - "The LAN interface does not have data buffers; the 
>interface uses system memory as its data buffer. The controller has access 
>to the first 16MB of system memory, which may be shared with other 
>resources. The operating system, via the control and status registers, 
>must ensure that the Ethernet controller does not access memory used by 
>other controllers. Access to system memory must be carefully tracked to 
>prevent overwriting valid data with new data." Well, I guess we can get 
>something bigger than an 8k FIFO with this :)
>
>as for 884xx CMU's on the 8500+, I don't know offhand, but I can find out 
>in a few weeks if/when the system is taken out of production use(!). Or, 
>if I have the 8500 programming book, but I don't think I do. The manuals I 
>have in front of me cover the 100,200,300,400,3000,4300,5000, and 6000.
>
>
> -- 
>
>The nice thing about Windows is - It does not just crash, it displays a
>dialog box and lets you press 'OK' first.
>						-- Arno Schaefer
>
>
>
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