Mon Dec 18 14:26:42 UTC 2023

was: Tue Feb 21 18:41:46 UTC 2023

Part I.02

stm32f4xx_saga-pt-I.02.txt


con't from previous enumerated filename variant. ;)

  1973:  A Bowmar pocket calculator brought home and maybe handled a little
  1974:  time-share dial-up using Teletype Model 33 (similar name to that)
  1974:  W1AW station visit - punched tape reader playing CW bulletins seen
  1974:  typing lessons in public school (did not take well)
  1975:  High school ham radio club
  1982:  minicomputer (in rack-mounted equipment in a pro shop was seen)
  1982:  TI 99/A  variant personal computer seen
  1983:  Close relative acquires a Leading Edge Model M (dual floppy)
         played with it extensively.
  1984:  Radio Shack or Tandy Pocket PC (Sharp was the OEM)
  1984:  DEC Rainbow.  Was asked to 'learn it' in their office.  Learned to
         touch type on it, too.
  1984:  Wang PC access at volunteer job

  1987:  Bought first personal computer desktop machine. A 4.77 MHz 640kb
         or 1 Mb RAM machine, a Tandon - possibly dual-floppy initially,
         but could also have had a ST-225 MFM hard disk in it (from Seagate).

         Negative.  Shipped with ST-225 (25 MB) and upgraded to the similar
         part number for 40 MB (extra platter almost the same unit iirc).

  1989:  Ham packet radio TNC acquired.  On the air.
  1989:  President of a local major computer club that year.
  1991:  80386-DX-33 machine (tower) bought (way overpriced)
  1994:  Installed Linux just months after logging into first ISP account

  2002:  Vague exposure to the PIC - possibly a bit earlier or later
  2005:  Working with C8051F300 MCU and learning Forth
  2016:  Near the time of ATSAMD21G18A first use (probably 2017)
  2017:  Arduino IDE used near this time

  2017:  Long march of many ports of Forth into the Arduino IDE, begins
         around 2017.  The itch, still unsatisfied, grows daily.

  2018:  mecrisp-stellaris  -  the very reason for beginning today's writing
         revolves around initial (but unsuccessful) efforts to get mecrisp
         going - on anything at all.  Did not understand enough to proceed.

  2022:  RP2040 and micro:Bit v1.5 both on mecrisp-stellaris, giving a
         preview of the relatively complete environment it offers for
         development in Forth.  Wanting more (or to 'get even with' it
         by installing it correctly on the first platform tried, a few
         years earlier - never quit .. but expect sizeable delays ;)

  2023:  mecrisp-stellaris success STM32F411 Black Pill!

         The Black Pill, like every STM32F4xx tried, runs eForth v7.20 but
         none of the examples owned (F405, F407, and F411) did.  Until now.

         Secret: erase all of flashROM memory first.  That was the
         missing part.

         Instead of figuring out some other way to do that, it was surmised
         that eForth v7.20 never seemed to mind a fresh install on any
         target, and did not care much how it found it before the install.

         So: once inside eForth, erase it all from there.

         Normal behavior: boot nothing at all when this is done - blank slate.

         That proved adequate for subsequent install of mecrisp-stellaris.

....v...10....v...20....v...30....v...40....v...50....v...60....v...70....v...80


END.