I tried out Mike's idea of using a PIC16F18313 to create clock signals for a 65(C)02 and 65(C)51 plus a DS1813 like EconoReset pulse.

The code, schematics and resulting waveforms can be found here https://github.com/andrew-jacobs/hz-maker.

More testing is required but looks promising.

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Andrew Jacobs
6502 & PIC Stuff - http://www.obelisk.me.uk/
Cross-Platform 6502/65C02/65816 Macro Assembler - http://www.obelisk.me.uk/dev65/
Open Source Projects - https://github.com/andrew-jacobs

I like it. Great application!

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Please visit my website -> https://sbc.rictor.org/

Are you planning to produce these?

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x86?  We ain't got no x86.  We don't NEED no stinking x86!

Hey, Andrew... nice job.


Hi BigD.

I have a programmer and could perhaps help out state-side users.

I should mention that this is an updated version of the 8-pin ClockGen circuit I posted a couple years ago. That version had a lower frequency Clock and an NCO (Numerically Controlled Oscillator) with only a 16-bit phase increment register which limited NCO output to about 307200-Hz (19200x16). The new PIC 18000 series devices support a higher speed clock and have 20-bit NCO phase accumulator and phase increment registers. Some possible settings for ACIA clock include;

A 14-pin version can include jumpers to set the CPU clock (1/2/4/8-MHz) and the ACIA clock. Having a jumper to select ACIA clock frequency might be handy if using a 68B50 or HD63B50.

Cheerful regards, Mike