Nascom News­let­ter

called. In this way you can have more than 60K of RAM space for user programs (in fact the monitor occupies less than 300 bytes of RAM space) regardless of how many new routings you have added to Nas-Sys.

S.D. Pedersen,
Copenhagen,
Denmark

The simplest clock of all ????

On many Nascoms, the PIOs are not used. If you have one of those unused PIOs, here is a description of how to make a timer out of it.

You only have to do the following:–

• connect the ASTROBE of the PIO (PL4 pin 11) to ground
• connect TP1 to PIO A7 (PL4 pin 24)
• type in the following program and execute it at 0D10H