Looking for info on 1581 ROM TFSS Update-5 and -6

[+OLD CS1]

Zimmers has the 1581 Update-5 and -6 ROMs by TFSS with a little information but not complete. Specifically, Update-5 says:

 

 

 

Using 8K SRAM Expansion $2000-$3FFE, And MOSTECH 6529B PIO $3FFF for parallel data transfer routine from BARD'S TALE III.

 

The is pretty self-descriptive but is there an accompanying documentation showing how to perform the installations of the additional hardware? What about this parallel transfer routine in Bard's Tale III?

 

On a side note, Zimmers has what looks like the source code for the original 1581 ROM. I have mused upon the notion of an HD version or a dual-drive version of the 1581. Just because. Could be fun but not sure I want another "fun" project on my desk right now.

[Pheonix]

I'm currently searching for that information as well.  Did you ever find anything?

[+OLD CS1]

No.  It wound up being a passing curiosity for me and not practical to my purposes.  I lingered on it for a couple of days then it fell off my desk.