Re: Theorizing: Would exposing the internal 65xx CPU registers be of benefit for something?

From: Jesus Cea <*jcea_at_jcea.es*> Date: Wed, 22 Jun 2022 23:22:28 +0200 Message-ID: <61276939-390f-1e94-2c77-9fd37dabe569_at_jcea.es> · jcea_at_jcea.es

On 22/6/22 13:07, tokafondo_at_tokafondo.name wrote:
> Let's say that someone patches an emulator or fpga'ed 65xx cpu and exposes its internal registers.

Modern CPUs, even dirty cheap microcontrollers, have JTAG capabilitied: 
breakpoints, instruction single stepping, read/write of internal 
registers. Only 4 pins needed, 2 if you share VCC and GND (cJTAG variant).

Nevertheless, I don't see the point for a C64, beside debugging and that 
would be a very small market.

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