As if it weren’t nerdy enough, the 6502 40th Anniversary Computer Badge runs Lee Davison’s EhBASIC. There are 1024 whole bytes free for your programs, so it’s not exactly spacious. It’s got useful floating point support, though:
Yup, that’s the second most boring BASIC example program, after the quadratic root finder.
100 REM HERON ROOTS
120 INPUT "X";X
160 PRINT N,RN,DE
190 IF DE>EP THEN GOTO 150
Update: Josh got my badge working again (it wasn’t, for $reasons â€¦) and I re-ran this code. If you try the code for X=100000 and larger, it won’t converge. You might want to add:
185 IF N>25 THEN PRINT "EPSILON TOO LARGE, EXITING":END
so that the loop will exit after 25 times. Alternatively, make the value of EP depend upon the size of X. Aren’t numerical analysis and floating point foibles fun?
All of 2 KB RAM, but the form factor can’t be beat. I’m sure I’ll be the hippest cat on the block when I pair it with my happening 2012 Hamvention lanyard â€¦
Thanks to Josh Bensadon for bringing a 6502 40th Anniversary Badge back from VCF Midwest. Josh also got my Apple //e going again by replacing RAM chips: I can’t thank him enough for that, too!
I did make some minor mods to the build:
I socketed the main chips. The 6502 is in 2Ã— cut up 20-pin narrow sockets. Under the EPROM is the 2KÃ—8 SRAM, socketed too. This means that the EPROM is in two stacked sockets and sticks out far too far. But at least it’ll allow me to upgrade the RAM
I used real pin-header jumpers and links for RAM and EPROM size selection instead of solder links. This meant a horrible kludge for the RAM selector under the SRAM chip involving angled and bent headers, a filed-down chip socket and a hand-knotted wire jumper (artisanal af!)
Even though there’s no mention of it in the manual, I stuck the battery pack on the back
One bad mod: the HL-340 RTS mod suggested in the manual is much harder than it looks. I trashed the supplied USB adapter, but I have others …
After being used as a wall-hanging for approximately 20 years, then surviving an intercontinental trip in my luggage, the Synertek SYM-1 is running. I think a few segments of the display are iffy, but it responds to the keyboard and beeps. Next step is to hook up the serial port.