At 14:27 19/07/2000 +0100, Andrew Gallagher wrote: >That reminds me of an idea I had - quite often the sound in Speccy games >being played on the sam is horrible because of the different clock >speeds. What would be involved in making a software-controllable clock? >For example, a small piece of logic which reads a rate from a particular >port and controls an adjustable clock circuit appropriately? Would it be >worthwhile? (I could see its use in speccy emulation) And could you then >write a program which fried your hardware? :-)
Sounds very expensive, especially the bit about the adjustable clock circuit. For my limited knowledge, the crystal can only 'tick' at a certain speed because of it's inbuilt resonant electromagnetic frequency. Literally, the electricity passed through the Quartz (or whatever) causes it to perform simple harmonic motion. But having said that - it would solve all the speed problems of Speccy emulation (sprites haring around like Miner Willy on speed). Was the second Z80 mentioned in the hardware solution going to be able to run as a co-processor? Mmmm, dedicated hardware...... -tobermory The NTICS Group: providers of Database Services to learndirect and Sheffield TEC. Contract management: Sheffield Libraries, Archives & Information Service. National Training Information Central Support Unit 4 AVEC 1 Sidney Street Sheffield S1 4RG Tel: 0114 275 1046 Fax: 0114 273 0024 Email: [EMAIL PROTECTED] Web: http://www.ntics.clara.net The contents of this e-mail are confidential to the addressee named above and may be legally privileged. If you are not the intended recipient of this message, you are hereby notified that any use, dissemination, distribution or reproduction of this message is prohibited. Any views expressed in this message are those of the individual sender and may not necessarily reflect the views of NTICS or Sheffield City Council.
