Hello Ruud, >> No, but with underclocking. The 6502 runs at 500 KHz but dies at 250 KHz. >> What is the explanation? The Z80 for example can be clocked by hand if >> needed. And I don't expect a DRAM-like register set inside the 6502. >I believe an data sheet states that the 6502 uses a dynamic design, whatever >this means... I always thought that this means that you cannot underclock >it... Could the two-phase clock be what makes it an efficient design, but if the internal delays for each micro-op is generated by an RC circuit then things fall over... Only a hypothesis, but I agree with Ruud I can't see them having used a transistor-capacitor memory cell instead of a true flip-flop for their registers /latches? - Nick PLEASE TAKE NOTE: The contents of this email (including any attachments) may be privileged and confidential. Any unauthorised use of the contents is expressly prohibited. If you have received this email in error, please advise us immediately (you can contact us by telephone on +61 8 9441 2311 by reverse charge) and then permanently delete this email together with any attachments. We appreciate your co-operation. Whilst Orbital endeavours to take reasonable care to ensure that this email and any attachments are free from viruses or other defects, Orbital does not represent or warrant that such is explicitly the case (C) 2000: Orbital Engine Company (Australia) PTY LTD and its affiliates Message was sent through the cbm-hackers mailing list
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