I rewrote 2 DiskSumo bottleneck routines in 6502 machine code (against original plan, I started to optimize sending):
- read a disk sector into buffer
- send buffer as #Xmodem packet
With 1200 bps #RS232, floppy disk dumping speed dropped from 90 minutes to 40 minutes, getting closer to line […]
I pushed out a minor patch to my DiskSumo fork, just to remind myself how the program works and verifying my C64 and 1541 hardware are still OK.
Next goal for me is to rewrite the bottleneck routines in machine code in the following order:
- RS232 character reception polling loop.
- Xmodem […]
Before torrents, before FTP, before high-speed — we had #Xmodem, Express! Term, and a whole lot of watching this screen..
Checksum in play,SOH timeouts
NAK’ing blocks like a champ
You know the thrill of waiting 40 minutes for a cracked Donkey Kong
#BBSing #atari #RetroComputing #SouthernAMIS
FrontDoor re-boot
Well, what do you know, you *can* revive the old days 😉
defsol.com/downloads/de...
#fidonet #retrocomputing #retro #geek #frontdoor #xmodem #zmodem #lotech #hitech #lol #becauseican
Sad to hear, creator of #xmodem protocol and co-creator of #bbs has passed. Rest in peace Ward! arstechnica.com/gadgets/2024...
#geek #ibm
"Ward Christensen, BBS inventor and architect of our online age, dies at age 78"
arstechnica.com/gadgets/2024...
#wardchristensen #bbs #xmodem #pioneer
