Pito wrote:
@knivd
Quote:
@Pito: Sorry, I didn't understand question about the flatpacks... Happy to answer once clear, though.
I see two big chips there on the pcb (except the mx470) - what they are for? ("flatpack" comes from -
https://en.wikipedia.org/wiki/Quad_Flat_Package )
Btw: @120MHz 72mA, @80MHz 40mA - the half of the 795..
With 120/120/30(sdcard)MHz.. a killer platform for RetroBSD

And with double precision SmallerC - The Ultimate Platform - TUP

Aaah... how could I not think of that?
Anyway, the three QFPs are - the MX470, SSD1963 video controller (that's the fat one), and PIC16F1517 which serves as keyboard and power controller. You might see that keyboard layout is a mixture of a few standards. I have developed it in the way that looks most universal. Dumped the useless 'Alt', 'Caps Lock', 'Win',... etc. keys, added 'Accent' key which lets you generate the full ISO-8859 table (in the current firmware 8859-15) with the support of non-English and special characters. Double press of either 'Shift' or 'Accent' locks them to the upper register.
The smaller chips are the RTC, the power, LCD backlight, touch screen, and a multiplexer to select the uSD drives.
The module on the bottom left is the extremely nice RFD21733 module.
There is also another 8-pin soic which is not in this picture because I added it later for the final release. It is optional external SPI memory (SRAM/FRAM or flash) - maybe swap file or other data.