Anyone use No-Slot Clock in a Slot?

[John Brooks]

Looking at the driver code for the No-Slot Clock, there is a lot of code to support the possibility of a NSC placed on a card in slots 1-7 for Apple ][ and Apple ][+.

The NSC manual mentions the SMT Envoy and SMT Memory Expander as examples of the NSC being installed in a slot.

Does anyone actually use the NSC this way? I'd like to make a new NSC driver and the 'slot' support is problematic.

Thanks,
-JB
@JBrooksBSI

[Nick Westgate]

On Monday, 27 March 2017 17:04:41 UTC+13, John Brooks wrote:
> Does anyone actually use the NSC this way? I'd like to make a new NSC driver and the 'slot' support is problematic.

Only the NS.CLOCK.SYSTEM driver supports the slots. The other two I know of don't. (SWU.SYSTEM and the GEOS driver.)

When writing the AppleWin NSC emulation I disassembled parts of those existing drivers and summarized what memory areas they support.

The disassemblies and summary are here:
https://github.com/AppleWin/AppleWin/tree/master/docs/NoSlotClock

Cheers,
Nick.

[Michael J. Mahon]

I used it under the EPROM on a UDC card (slot 5), and was pleasantly
surprised that it worked. ;-)

--
-michael - NadaNet 3.1 and AppleCrate II: http://michaeljmahon.com

[John Brooks]

Thanks Nick! Those are helpful.

-JB
@JBrooksBSI

[dmrog...@yahoo.com]

On Monday, March 27, 2017 at 12:04:41 AM UTC-4, John Brooks wrote:

>
> The NSC manual mentions the SMT Envoy and SMT Memory Expander as examples of the NSC being installed in a slot.
>
> Does anyone actually use the NSC this way? I'd like to make a new NSC driver and the 'slot' support is problematic.
>

I believe RC Systems' Slotbuster II card uses an NSC as the clock option.