Date   : Wed, 19 Jul 2000 11:26:07 +0200
From   : Carlo Concari <conca@...>
Subject: Service calls and BBC demos

Angus Duggan wrote:

> I don't know what &15 is (is this a Master or a normal beeb?)

The reference guide for my Master Compact says:

"&15 Allows a polling interrupt for paged ROMs
If a hundredth-second polling interrupt for paged ROMs has been
requested (using OSBYTE 22), this call will be repeated at every timer
interrupt. Y register is the number of relevant requests for this
interrupt. A ROM can decrement Y a number of times corresponding to how
many requests it performed. A ROM that decrements Y to zero can
exclusively accept this call".

Also, I'm very interested in demos like "Cold Tea" and others people on
this list are talking about; I used to enjoy demos on the PC years ago,
but didn't know any existed for the Beeb. Please upload demos on "TBL!"
or other BBC-related sites!

Ciao,
Carlo.