MCL65+ 6502 Accelerator Board

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Mike
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Re: MCL65+ 6502 Accelerator Board

Post by Mike »

crusti wrote:As this can access the full 64k then [MCL65+] could be a easy/inexpensive way for Mike's inbuilt 3k stuff to work for us mere mortals.
Sorry, but no.

MCL65+ sits on the "wrong" side of the address and data bus buffers. On the CPU side, there's the cartridge port, BASIC ROM and KERNAL ROM; on the VIC side, there's the internal RAM, colour RAM and character ROM. (The VIA chips get a special handling, but that's not relevant here.) While the VIC fetches video data, the bus buffers separate VIC bus and CPU bus half. That means the VIC chip cannot access anything on the CPU side of the shared bus!

As a consequence, MCL65+ is not able to replicate the functionality of the VFLI mod.
MicroCoreLabs
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Re: MCL65+ 6502 Accelerator Board

Post by MicroCoreLabs »

Hi,

I listed the MCL65+ bare boards on Ebay for anyone who wants to own one. Assembly required, however its only $5!

https://www.ebay.com/itm/154425026770

Thanks
-Ted Fried
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