Date   : Sun, 25 Jul 2010 16:46:00 +0100
From   : jgh@... (J.G.Harston)
Subject: Proposed allocation: Configuration RAM byte 8

Sprow wrote:
> J.G.Harston wrote:
>> feed-in clock to be divided by 16 to get the MIDI 31.25KHz clock. Some
>> interfaces (eg EMR) have an on-board 2MHz clock, so need to divide by 64.
>
> That only has two states, so wouldn't byte 18 bit 4 make more sense.

Yes, I'd been thinking that myself. The ACIA clock setting is 00,01,10,11
for divide by 1, 16, 64 or reset. Divide by 16 and 64 are the only
sensible values, so a 1-bit flag is better.

> I also have notes to say that Edit uses bit 7 and the network software uses
> bit 6 of byte 8, but no ROMs (handy) to back that up.

I've gone through the disassembly of Edit v1.00 and it only uses b0-b5.
I'll have to get around to checking Edit v1.10 as see what it does.
NetFS only uses byte 17.

> I also wonder if you could auto detect it rather than needing a
> configuration value
[snip]

I've been trying to work something like that out. I'll see if I can
do anything with that.

-- 
J.G.Harston - jgh@...