16bit 8080

[WanaGo]

Hi, Just wondering if there is a limitation to 8bit MCU 8080 for a display, or if its possible to expand this to 16bit 8080 too? Just curious if you encountered a limitation and stuck with 8bit only for a reason etc Thanks

[zapta]

If I recall correctly it was a matter of pin availability on the PIco. I think that the Pico's PIO requires the 16 bits to be specific pins which in my application conflicted with other pins I needed. Not 100% sure though, it was some time ago.

On Thu, Feb 22, 2024 at 6:09 PM James @.***> wrote:

Hi, Just wondering if there is a limitation to 8bit MCU 8080 for a display, or if its possible to expand this to 16bit 8080 too? Just curious if you encountered a limitation and stuck with 8bit only for a reason etc Thanks

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[bdbarnett]

@WanaGo Sorry I just saw your message. I don't have a 16-bit 8080 to test with. I wrote _i80bus.py so that it SHOULD work for 16 pins with a couple of modifications.

• add data8 through data15 in __init__
• change the line pins = [data0, data1, data2, data3, data4, data5, data6, data7] to include those pins
• change the line if len(pins) != 8: to if len(pins) != 8 and len(pins) !=16:

It's worth a shot. If you try it, will you please let me know whether it works for you?