this device can run mac os 7?

[ojej]

Normal native system and program. Of course rom is not free but users can put rom if have.

Normal old mac with LCD screen, good keyboard and usb mouse (and sound) sound good, very good.

[rickyzhang82]

In theory, you could. But there is still a lot of work to support peripherals

• hard drive/sony floppy
• frame buffer video output
• ...

You need to hack Mac ROM to support your bespoke peripherals. Have you checked out the work in Basilisk II ROM patching? That's a major work to write a hardware/emulated hardware driver in ROM patching.

[ojej]

I, unfortunately, can't do that.
So this is just a suggestion for you.

thanks

[rickyzhang82]

I bought the parts plus a 5v tolerant Xilinx CPLD for glue logic. I'm going to replicate this design and add a VGA video card based on the idea from Burr Smith.

In 80s, Macintosh team designed their frame buffer DMA in PAL (see diagram below). I may use CPLD to get this done. This would be a fun project.

[mifritscher]

Hint: You have already bit-hang SPI at the UART. For SPI there are many displays available ;)
Not the fasted method, but should be enough for a simple start.