-
BinaryGoddess' Blog
-
Albert's Blog
-
MegaManFan's Blog
-
Ed Siegler's Blog
-
FireTiger's Blog
-
Atari Rescue Group's Blog
-
EricBall's Tech Projects
-
liquid_sky's Blog
-
Cybernoid's Blog
-
Lost Blog
-
shep's Blog
-
Trey's Blog
-
Boo
-
Kepone's Blog
-
Beware of Kiwi
-
Fun in the beer mines
-
PacManPlus' Blog
-
Atari 8-bit Moria port
-
Tim's Blog
-
Mindfield's Chewy-Centered Blog
-
The Long Dark Teatime of the Soul
-
TP's Blog
-
Adam Sessler's Brutally Honest Blog
-
Shut Up and Play Yer Atari
-
None
-
Atarinvader's Blog
-
Atari 8-bit archiving
-
Brunobits' Blog
-
ATARIeric's Blog
-
wrenchien's Blog
-
Trade-N-Games' Blog
-
wapchimp's Blog
-
Shared Words
-
Bastard's Blog
-
homerwannabee's Blog
-
Haydn Jones' Blog
-
The World According To Yuppicide
-
How I did It
-
Buck's Blog
-
atwwong's Blog
-
1
-
sandmountainslim's Blog
-
Atari Jaguar Projects + More
-
StanJr's Blog
-
Schmutzpuppe's Blog
-
Bullitt's Blog
-
panda_racer's Blog
-
Inky's Blog
-
Lauren's Place
-
DanBoris' Tech Blog
-
atariauctions' Blog
-
Planet Bob
-
CSIXTY4.com
-
Robin Gravel's Blog
-
lestergame
-
Duke 4ever's Blog
-
Atari Haiku Blog
-
An7ron
-
glitch's Blog
-
Coleco-Atari Era
-
Kenfused's Blog
-
Ralph3's Blog
-
nester's one star gaming
-
Halt and Catch Fire
-
lizard's Blog
-
Laner's Classic Gaming Blog
-
Page 6
-
keilbaca's rants
-
SirWilliam's Blog
-
Birdie3's blog
-
MattG/Snyper2099's Blog
-
madmjennifer's Blog
-
Ablogalypse Now
-
Endless Quest
-
Greenious' Blog
-
wookie's Blog
-
Justclaws' Blog
-
VTAtari's Blog
-
SID CROWE TESTING THE blog softwareeee
-
Dutchman2000's Blog
-
Famicoman's Blog
-
scogey's Blog
-
Retro Gaming Obscuria
-
atarifan49's Blog
-
Chronogamer
-
flavoredthunder's Blog
-
Shernand's Blog
-
Robert M's Blog
-
albaki's Blog
-
BTHOTU's Blog
-
Zach's Projects
-
BuzzTron-451's Blog
-
The Occasional Coder
-
Joystick Lunatic Software on AtariAge
-
Zander's Blog
-
The randomness that is Mr. 8-bit/16-bit.
-
bluetriforce's Blog
-
ubikuberalles' Blog
-
Worm Development Blog
-
Eight Bit's Blog
-
mos6507's Blog
-
phaxda's Blog
-
potatohead's Blog
-
Mountain King's Blog
-
The Southsider
-
The World is Flat?
-
brianwolters' Blog
-
Bidouille's Blog
-
Zybex/Atariware Blog
-
JagDiesel's Palace 2
-
Sega_master's Blog
-
Deep into the Mind Game
-
Bob's Blog
-
Rockin' Kat's Blog
-
Push Me, Pullman
-
(Insert stupid Blog name here)
-
dgob123's INTV Blog
-
Random Terrain's Tetraternarium
-
Odyssey Development Corner
-
Pacmaniax
-
GPD Comics Blog
-
sergiomario's Blog
-
prorobb's Blog
-
Days Atari Events
-
gamester1's Blog
-
Shannon's Blog
-
Mord's Blog
-
liquidcross.com - blog
-
MIPS HEAVY INDUSTRIES
-
MayDay Today
-
javiero's Blog
-
Great Exploitations
-
Monster Angriff's Blog
-
Draikar's Blog
-
Random Acts of Randomness
-
TROGBlog
-
hex65000's Blog
-
Being Of The Importance Of Shallow Musing.
-
daclmi's Blog
-
2600 in 2006
-
Sayton's Blog
-
For whom it may concern
-
Osbo's Blog
-
ataridude81's Blog
-
Wiesbaden Gaming Lab
-
SpiceWare's Blog
-
The Upward Spiral
-
Web-Frickin'-Log
-
Starosti 8bitového grafika
-
WWW.BUYATARI.TK
-
commodore & atari :)'s Blog
-
Dusk2600's Blog
-
GAMEBOT
-
Lynx 20 years
-
Songbird Productions
-
SpaceInvader's Blog
-
Retro point of view
-
VampyricDreams666's Blog
-
le geek's nonsense
-
Hardcore's Nostalgia
-
4old-times-sake's Blog
-
shadow460's Blog
-
AtariJr's Blog
-
Memoirs of an X register
-
maximebeauvais' Blog
-
atari2600land's Blog
-
.:maus:.
-
PAM1234's Blog
-
Nabuko's Den
-
Paranoid's Blog
-
Culmins Development's Blog
-
Atari Joe's Flippin' Sweet Blog
-
When Robots Attack
-
Flack's Daily Smack
-
Jboypacman's Blog
-
neonesmaster's Blog
-
Classic Stories
-
Bruce Tomlin's Blog
-
Beetle's Blog
-
5-11under's Blog
-
EricDeLee's Blog
-
TunnelRunner's Blog
-
jaymz887's Blog
-
fojy-harakiri's Blog
-
Shroo-man's Blog
-
Ataria51's Blog
-
Mr. Pac-Man's Blog
-
JellE's Dwelling
-
Gaming With Rogmeister
-
Pengwin's Blog
-
neotokeo2001's Blog
-
Arcade's Blog
-
R. Jones' Blog
-
payman84ce's Blog
-
Awed Thoughts
-
super mario 64 level editor
-
Christos' Blog
-
atari_collector's Blog
-
imtron's Blog
-
My Vintage Game collection
-
classicgamingguy's Blog
-
HP Atari King of Michigan's Blog
-
Unknown arcade titles from Fighter17
-
Ain't got time for no Jibbajaba
-
Wickeycolumbus' Blog
-
Ramblings of a moron
-
HatNJ's Blog
-
BlogO
-
ELEKTROTECK
-
bf2k+'s Blog
-
ParaJVE's Blog
-
Cody Rushton's blog
-
It's my life!
-
Bakasama's Blog
-
Dennis V's Blog
-
RaRoss' Blog
-
Collecting Demos
-
Dave Neuman's Blog
-
Borntorun's Blog
-
warren798's Blog
-
Tweety's Blog
-
-^CB^-'s Game Reviews
-
seekingarobiejr's Blog
-
revival studios
-
bust3dstr8's Blog
-
Rom Hunter's Blog
-
Shark05's Blog
-
Lord Helmet's Blog
-
ryanez1's Blog
-
kit's Blog
-
Burma Rocks
-
Bubsy Bobcat Fan Blog
-
Habaki's Blog
-
Dan's Road to 2600 nirvana
-
wccw mark's Blog
-
Hornpipe2's Blog
-
Phantom's Blog
-
Piggles' Blog
-
Dino Dash Derby
-
games_player's Blog
-
1982VideoGames' Blog
-
Cabbage Patch Kids! Lookin' Great!
-
Confessions of an Aging Gamer...
-
theking21083's Blog
-
retrogeek's Blog
-
Liveinabin's scribbles
-
Cimerians' Blog
-
CollectorVision Blog
-
Ransom's Random Posts
-
www.toyratt.com's Blog
-
RonPrice's Blog
-
s0c7's Blog
-
doyman's Blog
-
DJTekid's Blog
-
EG's code blog
-
kiwilove's Blog
-
8 Bit Addiction
-
Playing With History
-
simonh's Blog
-
Zereox's Blog
-
Draconland
-
chris_lynx1989's Blog
-
Phuzzed's Blog
-
7800 NZ's Blog
-
Gamera's Reviews: E.T Coming Soon!
-
Iwan´s Irrational!
-
seemo's Blog
-
The Eviscerator Series
-
Noelio's Blog
-
480peeka's Blog
-
For Next
-
Take 'Em To The Woodshed
-
bankockor Blog
-
Kelp Entertainment
-
2600 Fun Blogs
-
PinBlog
-
IHATETHEBEARS' BLOG
-
Atari Fan made Documentary
-
Flashjazzcat's Blog
-
THE 1 2 P's Demo/Import/Gaming Blog
-
STGuy1040's Blog
-
enyalives' Blog
-
Mirage1972's Blog
-
blogs_blog_286
-
The Word Of Ogma
-
GC's blog
-
nanobug's monument of geekiness
-
dogcorn's Blog
-
I Can't Think of a Catchy Title
-
please help and share story
-
ivop's Blog
-
what is the chicago basment
-
Cheat Blog
-
zeropolis79's Blog
-
My video game library
-
the.golden.ax's "Oh my Blog"
-
ValuGamer
-
wolfpackmommy's Blog
-
Z80GUY's Blog
-
jwierer's Blog
-
kroogur's Korner
-
Verbal Compost
-
Frizo's Collecting Adventure!
-
Old School Gamer Review
-
...
-
Rybags' Blog
-
BDW's Blog
-
tweetmemory's Blog
-
toptenmaterial's Blog
-
grafix's Bit Mouse Playhouse
-
S1500's Blog
-
hackerb9's blog
-
EricBall's Tech Projects (PRIVATE)
-
MagitekAngel's Blog
-
I created this second blog on accident and now I can't figure out how to delete it.
-
keilbaca's Blog
-
TestBot4's Blog
-
Old School Gamer Review
-
The Mario Blog
-
GideonsDad's Blog
-
GideonsDad's Blog
-
GideonsDad's Blog
-
Horst's Blog
-
JIMPACK's Blog
-
Blogpocalypse
-
simonl's Blog
-
creeping insanity
-
Sonic R's Blog
-
CebusCapucinis' Blog
-
Syntax Terror Games
-
NCN's Blog
-
A Wandering Shadow's Travels
-
Arjak's Blog
-
2600Lives' Blog
-
2600Lives' Blog
-
Kiwi's Blog
-
Stephen's A8 Blog
-
Zero One
-
Troglodyte's Blog
-
Austin's Blog
-
Robert Hurst
-
This Is Reality Control
-
Animan's Blog Of Unusual Objectionalities
-
Devbinks' Blog
-
a1t3r3g0's Blog
-
The 7800 blog
-
4Ks' Blog
-
carmel_andrews' Blog
-
iratanam's Blog
-
junkmail's RDE&P Blog
-
Lynxman's FlashCard Blog
-
JagMX's Blog
-
The Wreckening
-
roberto's Blog
-
Incagold's Blog
-
lost blog
-
kurtzzzz's Blog
-
Guitarman's Blog
-
Robert @ AtariAge
-
otaku's Blog
-
otaku's Blog
-
revolutionika's Blog
-
thund3r's Blog
-
edweird13's Blog
-
edweird13's Blog
-
That's what she said.
-
Hitachi's Blog
-
The (hopefully) weekly rant
-
Goochman's Marketplace Blog
-
Marc Oberhäuser's Blog
-
Masquane's AtariAge Blog
-
satan165's Dusty Video Game Museum
-
lazyhoboguy's Blog
-
Retail hell (The EB years)
-
Vectrexer's Blog
-
Game Maker to Game Dev
-
Retro Gaming Corporation
-
Hulsie's Blog
-
Tr3vor's Blog
-
Dryfter's Blog
-
Why Are You Even Reading This?
-
Xuel's Blog
-
GamingMagz
-
travelvietnam's Blog
-
pacmanplayer's Blog
-
TheLunarFox's Blog
-
caver's Blog
-
Atari 2600 for sale with 7 games 2 controllers
-
A Ramblin' Man
-
toiletunes' Blog
-
Justin Payne's Blog
-
ebot
-
Markvergeer's Blog
-
GEOMETRY WARS ATARI 2600
-
LEW2600's Blog
-
Pac-Man Vs Puck-Man's Blog
-
Bri's House
-
Les Frères Baudrand's Blog
-
Secure Your E-Commerce Business With ClickSSL.com
-
raskar42
-
The P3 Studio
-
Bydo's Blog
-
defender666's Blog
-
TheSSLstore - SSL certificates Validity
-
Chuplayer's Blog
-
pacman100000's Blog
-
POKEY experiments
-
JPjuice23's Blog
-
Gary Mc's Blog
-
arkade kid's Blog
-
MaXStaR's Blog
-
SUB HUNTER in A8
-
ScumSoft's Blog
-
The Social Gamer
-
Ping. Pong. Ping. Pong.
-
kgenthe's Blog
-
mapleleaves' Blog
-
Dallas' Blog
-
bfg.gamepassion's Blog
-
Esplonky's Blog
-
Fashion Jewellery's Blog
-
Gabriel's Blog
-
CJ's Ramblings
-
Dastari Creel's Blog
-
dobidy's Blog
-
dragging through the retro streets at dawn
-
Please Delete - Created by Accident
-
Nerdbloggers
-
Algus' Blog
-
Jadedrakerider
-
Appliciousblog.com
-
frederick's Blog
-
longleg's Blog
-
Brain droppings...
-
Sandra's blog
-
Bastelbutze
-
polo
-
VectorGamer's Blog
-
Maybe its a Terrible Tragedy
-
Guru Meditation
-
- - - - - -
-
The 12 Turn Program: Board Game Addiction and You
-
Tezz's projects blog
-
chonglily's Blog
-
masseo1's Blog
-
DCUltrapro's Blog
-
Disjaukifa's Blog
-
Vic George 2K3's Blog
-
Whoopdeedoo
-
ge.twik's Blog
-
DJT's High Score Blog [Test]
-
Disjaukifa's Assembly Blog
-
GonzoGamer's Blog
-
MartinP's Blog
-
marshaz's Blog
-
Pandora Jewelry's Blog
-
Blues76's Blog
-
Adam24's AtariAge Blog!
-
w1k's Blog
-
8-bit-dreams' Blog
-
Computer Help
-
Chris++'s Blog
-
an atari story
-
JDRose
-
raz0red's Blog
-
The Forth Files
-
The Forth Files
-
A.L.L.'s Blog
-
Frankodragon's Blog Stuffs
-
Partyhaus
-
kankan313rd's Blog
-
n8littlefield's Blog
-
joshuawins99's Blog
-
¡Viva Atari!
-
FujiSkunk's Blog
-
The hunt for the PAL Heavy Sixer
-
Liduario's Blog
-
kakpu's Blog
-
HSC Experience
-
people to fix atari Blog
-
Gronka's Blog
-
Joey Z's Atari Projects
-
cncfreak's Blog
-
Ariana585's Blog
-
8BitBites.com
-
BrutallyHonestGamer's Blog
-
falcon_'s Blog
-
lushgirl_80's Blog
-
Lynx Links
-
bomberpunk's Blog
-
CorBlog
-
My Ideas/Rants
-
quetch's Blog
-
jamvans game hunting blog
-
CannibalCat's Blog
-
jakeLearns' Blog
-
DSC927's Blog
-
jetset's Blog
-
wibblebibble's Basic Blog
-
retrovideogamecollector's Blog
-
Sonny Rae's Blog
-
The Golden Age Arcade Historian
-
dianefox's Blog
-
DOMnation's Blog
-
segagamer99's Blog
-
RickR's Blog
-
craftsmanMIKE's Blog
-
gorf68's Blog
-
Gnuberubs Sojourn Dev Journal
-
B
-
iesposta's Blog
-
Cool 'n' Crispy: The Blog of Iceberg_Lettuce
-
ahuffman's Blog
-
Bergum's Thoughts Blog
-
marminer's Blog
-
BubsyFan101 n CO's Pile Of Game Picks
-
I like to rant.
-
Cleaning up my 2600
-
AnimaInCorpore's Blog
-
Space Centurion's Blog
-
Coleco Pacman Simulator (CPMS)
-
ianoid's Blog
-
HLO projects
-
Retro Junky Garage
-
Sega Genesis/Mega Drive High Score Club
-
Prixel Derp
-
HuckleCat's Blog
-
AtariVCS101's Blog
-
Tales from the Game Room's Blog
-
VVHQ
-
Antichambre's Blog
-
REMOVED BY LAW AUTHORITY
-
Synthpop Universe
-
Atari 5200 Joystick Controllers
-
Top 10 Atari 2600 Games
-
Is Atari Still Cool?
-
Buying Atari on Ebay
-
matosimi's Blog
-
GadgetUK's Blog
-
The StarrLab
-
Scooter83 aka Atari 8 Bit Game Hunters' Blog
-
Buddpaul's Blog
-
TheGameCollector's Blog
-
Gamming
-
Centurion's Blog
-
GunsRs7's Blog
-
DPYushira's Entertainment Blog
-
JHL's Blog
-
Intellivision Pierce's Blog
-
Manoau2002 Game and Vinyl Blog
-
Diamond in the Rough
-
Linky's Blog
-
flashno1's Blog
-
Atari 2600 Lab
-
jennyjames' Blog
-
scrottie's Blog
-
Draven1087's Blog
-
Omegamatrix's Blog
-
MegaData Manifesto
-
Selling Atari on Ebay.
-
Unfinished Bitness
-
TI-99/4A Stuff
-
eshu's blog
-
LaXDragon's Blog
-
GozAtari8
-
Bio's Blog of Randomness
-
Out of the Pack
-
Paul Lay's Blog
-
Make Atari 2600 games w/o programming!
-
Rudy's Blog
-
kenjennings' Blog
-
The Game Pit
-
PShunny's Blog
-
Ezeray's Blog
-
Atari 2600 game maps
-
Crazy Climber Metal
-
Keith Makes Games
-
A virtual waste of virtual space
-
TheHoboInYourRoom's Blog
-
Msp Cheats Tips And Techniques To Create You A Better Gamer
-
Tursi's Blog
-
F#READY's Blog
-
bow830
-
Gernots A500 game reviews
-
Byte's Blog
-
The Atari Strikes Back
-
no code, only games now
-
wongojack's Blog
-
Lost Dragon's Blog
-
Musings of the White Lion
-
The Usotsuki Crunch
-
Gunstar's Blogs
-
Lesles12's Blog
-
Atari Randomness
-
OLD CS1's Blog
-
waterMELONE's Blog
-
Flickertail's Blog
-
Dexter's Laboratory Blog
-
ATASCI's Blog
-
ATASCI's Blog
-
--- Ω ---'s Blog
-
mourifay's Blog
-
Zsuttle's gaming adventures
-
Doctor Clu's Space Shows
-
TWO PRINTERS ONE ADAM
-
Atari Jaguar Game Mascots
-
Learning fbForth 2.0
-
splendidnut's Blog
-
The Atari Jaguar Game by Game Podcast
-
Syzygy's Story Blog
-
Atarian Video Game Reviews
-
Caféman's Blog
-
IainGrimm's Blog
-
player1"NOT"ready's Blog
-
Alexandru George's Blog
-
BraggProductions' Blog
-
XDK.development present Microsoft Xbox One Development
-
Song I Wake Up To
-
Jeffrey.Shamblin's Blog
-
Important people who shaped the TI 99/4A World
-
My blog of stuff and things
-
David Vella's Blog
-
Osgeld's Blog
-
CyranoJ's ST Ports
-
InnovaX5's Blog
-
Star_Wars_Collector
-
Alp's Art Blog
-
Excali-blog
-
STGraves' Blog
-
Retro VGS Coleco Chameleon Timeline
-
Geoff Retro Gamer
-
Geoff1980's Blog
-
Coleco Mini
-
Coleco Mini
-
7399MGM's Blog
-
7399MGM's Blog
-
doubledragon77's Blog
-
Ballblogɀer
-
pitfallharry95's Blog
-
BawesomeBurf's Blog
-
Fultonbot's Atari Blog
-
Dmitry's Blog
-
Kaug Neatos Crash Bandicoot Bandwagon
-
lexmar482's Blog
-
vegathechosen's Blog
-
Atari 2600JS
-
Doctor Clu's Dissertations
-
schmitzi's Blog
-
BNE Jeff's Blog
-
AverageSoftware's Development Blog
-
FireBlaze's Blog
-
Atarimuseum.nl
-
Vorticon's Blog
-
TurkVanGogH GameZ's Blog
-
bow830's Blog
-
Arcade Attack - Retro Gaming Blog
-
MrRetroGamer's Blog
-
GG's Game Dev, Homebrew Review, Etc. Log
-
dazza's arcade machine games
-
Alcor450's Blog
-
The Outback
-
-^CroSBow^-'s Hardware Videos
-
Captain's Blog
-
Memoirs of a Novelty Account
-
newcoleco's Random Blog
-
Second-Hand Shop
-
Doctor Clu's BBS Trotter
-
Lunar eclipse of the mind
-
simon2014's Blog
-
PhilipTheWhovian's Blog
-
Troff the Shelf
-
jacobus Indev
-
Pac & Pal for the Atari 2600 fan project
-
drawscreen then reset
-
Retrogaming Ramblings
-
G-type's Blog
-
Blog o' Buttons
-
DarQ Massacres' Atari 2600 collection
-
FireStarW's Blog
-
Bobbety_F's Blog
-
Rose-Tinted Recollections
-
Young Guy Experiencing Atari
-
Gray Defender's Blog
-
atasciiview
-
2600 games worse then E.t
-
ZippyRedPlumber's Blog
-
game_escape's Blog
-
Jackel192's Blog
-
The UAV Blog
-
MykGerard
-
OS9Dude's Blog
-
FPGA video game console
-
darryl1970's Blog
-
Funkmaster V's Gettin' Hip with tha Atari 7800
-
AtariMI1978's Blog
-
AtariMI1978's Blog
-
vidak's Blog
-
8-bit Computer System Colors in Food Coloring
-
WebSiteRing
-
The Best Assembly Computer
-
As time goes by ...
-
Atari 2600 Collection Bulk Box/ Cartridge Sale
-
T.R.A.S.H Blog
-
goodlasers' Blog
-
GauntletKing2878's Blog
-
My Inner Geek
-
A Raccoon's Retrocade Romp - AA Edition
-
homeboy's Blog
-
ThatAtomCat's Blog
-
Hawk's Blog
-
Bryan's Random Stuff
-
Developing Atari Programs on the Atari 800
-
Eltigro's Blog
-
Memories Limited to 640KB
-
my journey to completing the entire Atari libaray
-
Roblox
-
Question for Homebrew publishers
-
zilog_z80a's Blog
-
Return of the Bobcat
-
deepthaw's Blog
-
Little bit of this and little bit of that
-
Shannon's Blog
-
DoctorSpuds Reviews Things
-
Atari Portfolio Page On Facebook
-
azure's Blog
-
The Atari Kid
-
Alien Isolation Blog
-
Atari_Ace's Blog
-
AtariAdventure's Blog
-
AtariCrypt
-
acsabo's Blog
-
Bioshock Text adventure
-
AtariAdventure Reviews
-
Infinite Warfare Specialist
-
Karl's Blog
-
Bjorkinator's Babbles
-
DZ-Jay's Random Blog
-
CX40Hero's Blog
-
Heroes & Shadows Dev Blog
-
Empty
-
GoldLeader's Blog
-
Adventures in CC65
-
CS2X C# on Atari
-
pboland's Blog
-
Matts's Blog
-
orrko8791's Blog
-
orrko8791's Blog
-
Revontuli's Blog
-
Not Steve's Blog
-
Not Steve's Blog
-
SPACE ROANOKE
-
My life
-
skycop's Blog
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cessnaace's Blog
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I started talking about this over in the TK-II thread and thought it best to create its own thread. So my thinking is to possibly create an ICSP (In Circuit Serial Programmer) for a specific PIC micro controller chip made by Microchip, and using the Atari 8 as the actual programmer to re-flash the PIC device. So to see what is involved check out this diagram (courtesy: www.learningaboutelectronics.com). So imagine if you will that what is shown as the PIC Programmer, would be interfaced to the joystick port on the Atari 8, with one exception, that being a means of generating the higher Vpp voltage to initiate programming mode. For the specific PIC I have in mind (PIC16F1847), Vpp would need to be 9 VDC (older PICs require 13 VDC). There are Charge Pump IC's that'll double the 5 V available at the Joystick port, and Maxim is one of the manufacturers of just such a device (MAX1682/1683). These are good for about 98% conversion efficiency so the output should yield about 9.75 VDC. If that output is then switched by a transistor via a joystick I/O pin, that should bring us very close to 9 V factoring in the semiconductor losses of the switching transistor (example below). Besides this little bit of circuitry, everything else can be a direct connect to the joystick pins, thus keeping the hardware end of this project ultra simple (substitute a 9 V battery for the charge pump and it gets even simpler). So it appears that the hardware requirements are rather easily met, what about the ICSP programming (flashing) software? Well the nice thing is that the HEX files generated by most all of the PIC compilers is an ASCII coded file, and it contains all of the parameters required by the chip, including what are called configuration bit or fuse settings. At this time I don't totally understand the protocol requirements when sending this data to the PIC chip, but when I dive into this project later, hopefully I wont find it too difficult to understand for implementation from the Atari point of view. Some Reference Material: Microchip In Circuit Serial Programming Guide Microchip PIC16F1847 Memory Programming Specification - Michael
Hello all! I'm a second year Computer Engineering Student and my summer project is creating a modifiable NES controller using only the chip on the Arduino UNO. I was able to get my controller to interface with the console by connecting the two external interrupts to the NES's LATCH and PULSE lines. For those who may not be familiar, the NES uses a shift register that holds the inputs from the controller. (I simulated this in the registers of the CPU) 60 times a second, the LATCH lines grabs the current inputs, and outputs the first of 8 bits. Then the PULSE line goes high 8 times, and on each rising-edge the next bit of the output byte is sent to the console until the final pulse signifies the end of the sequence. What I'm trying to do is add the ability to record, then play back a run of inputs to the game. I have added a button and indicator LED to enter record/playback mode, and that part is working fine. I keep track of time by using one byte to count the number of latches. After latch 255, it resets back to 0 and adds a "NO-INPUT" entry to the recording if there were no input changes for the 0 - 255 cycle. I'm recording inputs by only recording input CHANGES during the LATCH ISR, and the latch count that the change occurred on. This then gives me a time and a mask that I can EX-OR to a starting "NO-INPUT". The problem I'm having is with the recording, it's very inconsistent. Sometimes every input is recorded, but the lengths of time between changes are very wrong. Sometimes, inputs are missed altogether. If I playback the recording, it executes the same way every time, so I don't think it's a problem with the playback function. I've tried using the chip's USART and a terminal on my computer to get some data from the chip that I can use to debug, but the multitude of interrupts seems to be messing with both the data being sent to the terminal and the data sent to the NES console. My two questions are this: What could be causing this issue with (seemingly) recording the data. And what can I do to debug this issue that doesn't require USART? Here's a GitHub repo with all of my code. I included the USART files I wrote even though they aren't used in the application. Thanks!
Over the years, I had accumulated about 75 AVR chips that I had bricked due to bad fuse settings. (yes, I am a slow learner) I recently built a Fuse Bit Doctor to restore them and it worked great. http://mdiy.pl/atmega-fusebit-doctor-hvpp/?lang=en This is the one I actually built, which has built-in support for AtTiny and TQFP32 328s. Additionally, I built a target board for TQFP32 ATMega32U2 and AT90USB162 chips, because that is what I use. https://www.tindie.com/products/bobricius/bare-pcb-avr-fuse-bit-doctor-hvpp-hvsp-fix-repair/ In the first link you can read about all the chips supported and the conditions that the Fuse Bit Doctor will fix. I figured I'm not the only Atarian to have bricked a few AVRs and that I'd offer a free service to those of you in the US. Basically, if you have bricked chips that are directly supported by the board, send me as many as you have and I'll mail them back to you the next day if I am not super busy or within a week or two if you catch me at a bad time. If they can be sent in an envelope with a stamp or two, no charge for return shipping. BUT - please message me first to let me know what you have. If you have one or two $3 AVRs that aren't directly supported by the board, that probably isn't worth my time (though again, happy to do it for one or fifty that I can plug in directly). If you have a number of expensive chips that need to be setup on a breadboard, I may be willing to help, just message me first so I can look into what is required. While I am at it, if you are not setup to program AVR chips but wish to update firmware for an Atari related device, etc, message me. I may be able to help. Unfortunately, at this time, I can't help with original Atari chips, etc. Hope this turns out to be useful to some of you. -Doug
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