SEPTANDY 2022
_ _ _________ ___________ .___ __| || |__ / _____/ ____ _____\__ ___/____ ____ __| _/__.__. \ __ / \_____ \_/ __ \\____ \| | \__ \ / \ / __ < | | | || | / \ ___/| |_> > | / __ \| | \/ /_/ |\___ | /_ ~~ _\/_______ /\___ > __/|____| (____ /___| /\____ |/ ____| |_||_| \/ \/|__| \/ \/ \/\/
CoCoTALK!
All hail L. Curtis Boyle for gathering the news for CoCoTALK! including these SepTandy items:
CoCoTALK! #278 2022-09-10
SepTandy 2022 on YouTube has started, and one of the first entries from “Geek With Social Skills”, who did a pickups, trades and donations. The main Coco related one is the Deluxe 2 button joystick unboxing he did, and it's in pristine shape (possibly never used):
https://youtu.be/SXGEf3WEuNQ?t=189
Michael Furman posted two video blogs (so far) for SepTandy. #0 - he finds a bunch of 3.5“ disks that were formatted for the Coco, and goes through some of the stuff he found, and how he hooked up his 3.5” drives to his Grease Weasel to read the disks RAW (and export the disk images in multiple formats):
https://youtu.be/jtXj-loHK0Y
And following that up with episode #1, where he actually recovers some of the graphics from his desktop publishing software he wrote in 1989 when he was 13:
https://youtu.be/cGDnpwevqTo
And episode #3, which is an update on running Drivewire on the CocoION Ethernet card (episode 2 is in game news) - he is just getting back into it after having to work on other things the last few months:
https://youtu.be/wY8Z_YDpc1c
Allen Huffman posted multiple blog entries for SepTandy:
- an assembly language subroutine to save and restore the 32×16 text screen:
https://subethasoftware.com/2022/09/02/coco-6809-assembly-save-restore-screen-routine/
his story of rediscovering a “hidden” feature in his own Invaders-09 game:
https://subethasoftware.com/2022/09/03/i-found-hidden-stuff-in-my-own-game/
an article on calculating 8 bit checksums, originally for the XModem protocol:
https://subethasoftware.com/2022/09/04/checksums-and-zeros-and-xmodem-and-randomness/
an article on an undocumented way to specify disk drive #'s in DECB: The manual (and most usage) has one append the drive number with :# at the end of a filename (for example RUN “TEST.BAS:1”). But it also allows putting the drive # before the filename in the form of #: (ie RUN “1:TEST.BAS”). I seem to remember that several Microsoft written disk operation systems (I think even MSDOS?) supported this syntax. Allen does note that later disk BASIC enhancements (like RGB-DOS, HDB-DOS and others do NOT support this).
https://subethasoftware.com/2022/09/05/disk-basic-and-drive-numbers-before-the-filename/
an article on various cycle counts to speed up clearing an area of memory (in this case, the screen), going from a loop with sta ,x+ all the way up to stack blasting 6 bytes at a time.
https://subethasoftware.com/2022/09/06/counting-6809-cycles-with-lwasm/
Rudy's Retro Intel on Youtube for this year's SepTandy did a video on RF to composite & audio mods to a Coco 1 with a TinyComp for <$20:
https://youtu.be/GXVS1jthHkc
AJ & Tim of Sibling Rivalry returned to the Coco this week with Sibling Rivalry 45: LeMans from Spectral Associates Unfortunately, they didn't know that the difficulty level affects the way you drive - the lowest skill level lets you turn instantly on a dime, while level 15 lets you skidding arcs around corners etc.:
https://www.youtube.com/watch?v=WfxNmhxao50
Amigo Aaron of the Amigos did his Friday Night disaster stream by doing a live stream last night of Coco games by Tom Mix, as part of their SepTandy:
https://youtu.be/KDfM9pcMEq8
Mikey also put up his SepTandy VLOG #2 - titled “Why Mikey is not a Game Programmer”:
https://youtu.be/NDoOpxA3tGw
Ken of Canadian Retro Things - posted a SepTandy video of his 5 more nostalgic games for the Coco:
https://youtu.be/nUN-55lereI
Retro Gaming Nook for SepTandy put up a video of Random Gameplay Part 1 (Arkanoid, Slay the Neries & Space Assault):
https://youtu.be/kzlTbxNHLHU
And part 2, where they played Skiing, Donpan, and their first Coco 3 specific game, Rampage!:
https://youtu.be/MV6vdu8BAVM
RTS
Return to SepTandy or Tandy Color Computer