Hi!
I was searching over some technical documents about the pin layout of
Turbo-R's disk drive. I found the description in:
http://www.faq.msxnet.org/connector.html
But later a friend of mine sold me a copy of the "Technical Guide
FS-A1ST", which contains the schematic of the board and the pin layouts.
Comparing one with another, I found a difference:
In MSX faq, pin 9 is SIDE SELECTION, and pin 22 is also SIDE SELECTION.
In Technical Guide, pin 9 is SIDE SELECTION, and pin 22 is DRIVE SELECTION.
Since I was interested in using a second drive through Turbo-R's disk
interface, I opened my A1ST and I measured both pins. Then I got the
conclusion that the "Technical Guide" is correct.
So, I would like that page be corrected.
BTW, standard drives have their selection using pins DS0, DS1, DS2 or DS3,
but Turbo-R drives have only the DRIVE SELECTION signal to select the
active drive. How can I connect a standard 720kb drive in Turbo-R's second
connector place?
Greetings from Brazil!
--------------------------------------------------------------
Marco Antonio Simon Dal Poz http://www.lsi.usp.br/~mdalpoz
[EMAIL PROTECTED] "Everything is a game"
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