Can FlashForth be used with the PIC18F27J53?

[David Briscoe]

HI,
I've bought myself a couple of PIC18F27J53 dev boards (https://www.ebay.co.uk/itm/182307853866?_trkparms=amclksrc%3DITM%26aid%3D777008%26algo%3DPERSONAL.TOPIC%26ao%3D1%26asc%3D20220705100511%26meid%3D0a4c754d8c32498e8c7dc147c37cf18d%26pid%3D101524%26rk%3D1%26rkt%3D1%26itm%3D182307853866%26pmt%3D0%26noa%3D1%26pg%3D2380057%26algv%3DRecentlyViewedItemsV2&_trksid=p2380057.c101524.m146925&_trkparms=pageci%3Ad4238561-d63d-11ed-97ef-fe4c300a108b%7Cparentrq%3A6231fc7d1870a0d2d1de2950fffeaac2%7Ciid%3A1

Will FlashForth work with this chip? If so, are the instructions here https://flashforth.com/install.txt still relevant and upto date? I'm using MPLABX 6.05 which I assume already has the latest assembler built in. If this will NOT work please tell me what I should be looking for when choosing a compatible PIC18 MCU. Thanks.

David.

[Mikael Nordman]

Any PIC18 with a 'J' in the part name is without EEPROM and will not work.

18F2550, 18F2455, 18F25K50 will work. I use those chips to verify FlashForth.

I could not spot a crystal on that board, the 18F25K50 works without a crystal so that should be the best alternative.

Also the 2553 should work but I have never tried it. It is a 2550 but with a 12 bit ADC, instead of a 10 bit ADC.

If you use a crystal it can be 4, 8, 12, 16 or 20 MHz for the USB interface and serial emulation to work.

The install.txt is up to date. Although not very detailed.