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Found 7 results

  1. Hi! Been awhile... after my dad passed away, I wound up moving, and the move gave me an ulcer... life sucks sometimes. Anyhoo, I finally got around to unpacking my 65XE and found I needed a stick. Not content with the old 2600 stick, I decided to make my own. So I looked over the threads to see what other people were doing, then decided to do it better. 😎 I love my Sega Genesis control pads. They're the best of the old systems. And the old 3-button pads (which actually have four buttons) looked to be a great place to start. I figured that I could make B the standard trigger, A the secondary trigger most people do for 8-bit/2600 pads, and then make C the same as up. On old 8-bit systems with their single button, up was jump on a great many games, so making C the same as up means that you have a jump button right next to the trigger button. That leaves a potentiometer line open, so I hooked that to the START button. So my control pad has two triggers, a jump button, and a separate START/PAUSE button. Noice! So let's get this puppy going! First, take the control pad apart. It's easy - there's just several cross head screws on the bottom. No special tool required. The PCB will look like this Ho! Lucky!! It's not surface mount. Older pads are like above, and newer ones are surface mount. The procedure to convert into an Atari compatible pad is exactly the same, it's just a lot more fidgety soldering. So I really lucked out on that one. So, next we remove everything but the cable. Yes, everything. Now you want to swap cable pins 5 and 7. Next, bridge IC pads 3 and 4, 6 and 7, 9 and 10, and finally 11 and 12. Solder a wire between IC pads 1 and 14. Then solder a wire from the pads that used to have the pull-up resistors connected to C and UP. Finally, solder 330 ohm pull-up resistors in place of the original pull-up resistors on A and START. The size of those resistors isn't that critical. I used 330 ohms because that what was suggested in the original A2600 two-button stick document. It could be anything between 200 and 6700 ohms. The smaller the resistance, the more power it takes, but also the quicker it will charge the potentiometer line. If you've done it all correctly, it should look like this Note the 1/8th watt resistors. Is that okay? Hmm, P = V^2/R, so 25/330, or about 76 mW, which is about 1/13th of a watt. So, yeah, it should be fine. If you wanted to use a resistor below 270 ohm, I'd suggest going with a 1/4th watt resistor instead. A quick check with the volt-ohm meter to make sure nothing is shorted and put it back together. See? Not that hard. Well, maybe this might help... it's some notes I made to keep it all straight in my head... And finally, here's a link to an arc of all the images, and a tiny test app that will show your new control pad in all its glory! Source is included. I assemble my A8 stuff using atasm these days, but you could also use M65. http://www.mediafire.com/file/kkwkb99zjwu5fyp/SegaJoyPad.7z/file
  2. RetroElectroDad

    Atari 800

    From the album: RetroElectroDad Computer Collection

    This Atari 800 arrived with a broken keyboard and would not boot. It now has a new keyboard from Best Electronics and boots after replacing one of the 16K memory banks.

    © Trevor Briscoe

  3. I'm just kinda curious about this odd issues with Bounty Bob Strikes back (the atari 800 cartridge version) in regards to emulation. On Atari800 the game will not let you activate the elevator on the 2nd level. I've tried several different versions. Oddly enough the cassette version (UK) works just fine, as well as the 5200 cart, if one wants to count that. However the game works perfectly fine in Altirra. So I was just curious from an emulation point of view what may be preventing the game from working properly on Atari800 using the Atari 800 cartridge version.
  4. This is an old port of the PSP edition of Atari800 to the GP2xWiz. I had simply never tried to use it until today, and I discovered that I can't get the 2nd fire button to work in 5200 mode. Anyone ever use this and get it to work?
  5. Asking on behalf of a friend: Out of curiosity, I was wondering if there are any expansions for the Atari 800, much in the vein of the expansions we have for the Atari XL/XE computers (RAM expansion, etc.) The Atari 800 maxes out officially at 48K RAM, which isn't enough for most of the homebrew games and such that target 64K+ RAM systems. I remember reading a long time back about some RAM expansions and such that do work on the Atari 800, but it's been ages and I'm wondering if most of that information is still relevant or not. One I remember reading about was the Incognito card (?), which gave the 800 a nice RAM boost. I *think* that was the name of it? (see what I mean by it's been ages? ) Anywho, can anyone point me to some good expansions that target the good old 800 computer that may still be available for purchase somewhere? I don't need anything like a SIO2SD or an Ultimate Cart; those are handled already.
  6. Sorry in advanced; I'm really-really new to gcc and c in general (a complete moron). SO I couldn't find atari800 rpm for Fedora 2x (at least not a 3.x version). atari800 3.x has some features not found in 2.x. I tried using alien to convert .deb's but no luck (never had much luck with alien), and even tried non-fedora RPMs. No luck there either (of course). Downloaded the tar.gz source atari800-3.1.0 - ./configure went ok, but when doing make install: xep80.o: In function `XEP80_Initialise': xep80.c:(.text+0x1479): undefined reference to `ANTIC_cur_screen_pos' xep80.c:(.text+0x148d): undefined reference to `ANTIC_cpu2antic_ptr' xep80.o: In function `XEP80_GetBit': xep80.c:(.text+0x15a2): undefined reference to `ANTIC_cur_screen_pos' xep80.c:(.text+0x15b6): undefined reference to `ANTIC_cpu2antic_ptr' xep80.o: In function `XEP80_PutBit': xep80.c:(.text+0x1673): undefined reference to `ANTIC_cur_screen_pos' xep80.c:(.text+0x168c): undefined reference to `ANTIC_cpu2antic_ptr' xep80.c:(.text+0x1715): undefined reference to `ANTIC_cpu2antic_ptr' xep80.o: In function `XEP80_StateSave': xep80.c:(.text+0x2515): undefined reference to `ANTIC_cur_screen_pos' xep80.c:(.text+0x2529): undefined reference to `ANTIC_cpu2antic_ptr' xep80.o: In function `XEP80_StateRead': xep80.c:(.text+0x2817): undefined reference to `ANTIC_cur_screen_pos' xep80.c:(.text+0x282b): undefined reference to `ANTIC_cpu2antic_ptr' collect2: error: ld returned 1 exit status make: *** [Makefile:119: atari800] Error 1 I'm guessing that's makefile line 119? which is $(CC) -o [email protected] $(LDFLAGS) $(OBJS) $(LIBS) dep: @if ! makedepend -Y $(DEFS) -I. ${OBJS:.o=.c} 2>/dev/null; \ then echo warning: makedepend failed; fi please take it easy on me :-( appreciate any input
  7. Hello, I just was using this Atari 800XL, and without reason, the "U" key seems as pressed but nobody is pressing the key. (see video, sorry for quality and few background sounds. ). https://youtu.be/msnZSZTz8a0 Dirty?, maylar issues?, key system broke? Any suggest, comments, are welcome. Best Regards.
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