ClausB

Mine is 76 frames but only 38 KB in size. The upload limit is 0.24 MB, about 245 KB. Your cafe is working. What's its size? Frames?

Have GIFs been disallowed for avatars? I see a few have survived the forum change but not all.

Thanks to Curt Vendel for making space for old #26 at VCFE! http://atariage.com/forums/topic/290910-vcf-east-day-2-day-1-for-me/

Thank you, Curt, for letting me and old #26 hang out with the cool kids!

The original 800 Operators Manual also confirms the memory map in this thread's first post - except for the 48K part. "... experienced computer operators" indeed - experienced with a soldering iron! https://archive.org/details/Atari800OperatorsManualFirstVersion1979

Yay! Need more Trek in this thread!

My previous hobby was amateur astronomy. When I got my Atari 400 in college I was still a member of the astronomy club back home and I still contributed articles to their newsletter. I wrote a short story about taking Candy (my 400) to "the Dome" (the club observatory) to interface her to our telescope. It was going well when she got other ideas. Suddenly I spotted a Zylon ship in the eyepiece and she started flashing Red Alert. As I aimed the finder scope she charged up the photon torpedoes and launched one out of the telescope! So went my story about playing Star Raiders from the Dome. Now I'll have to dig up that old newsletter. I don't think I wrote it on the 400 since I didn't have a printer then.

I did it in the day, though I cheated by writing my own P: driver to use joystick ports.http://atariage.com/forums/topic/234831-prantic/?do=findComment&comment=3173297 Another cheat is to replace $9B with $9A or $9F and live with one wrong dot. Edit: looked at the code and see that the custom driver doesn't help since it still goes through CIO, so I used the very cheat I mentioned above.

And Nir, can't forget Nir!

Good times had at VCFE. Lots of nice exhibits, at both the show and the museum. Thanks to Curt for sharing his impressive display with me and old #26. Nice to meet Maciej, Thom, Allan, Joe, Kevin, Forrest, Bill, and many others. Can't think of a better way to spend a rainy weekend.

I used the quarter squares method in BCD to speed up Atari's multiplier: http://atariage.com/forums/topic/124761-fast-math-rom/page-1?do=findComment&comment=1516639

Teensyduino installs over Arduino making for a simple IDE. PJRC takes great pains to convert Arduino libraries to Teensy. They also sell their own bootloader chip for use on custom PCBs. Worth a look.

I did a few Arduino AVR projects before I discovered Teensy and I'll never go back. Teensy 3.2 and 3.5 are 5V compatible 32-bit ARMs, perfect for retro projects. https://www.pjrc.com/teensy/techspecs.html

Try opening up each RAM and ROM module and reseating each IC.

BITD I patched Letter Perfect and Data Perfect to work with ACE80. IIRC I started with versions that supported the Bit3. Is there documentation on the Bit3 API? Maybe my patches could be adapted. BTW, I had no trouble running OS/A+ ver. 2 on ACE80.

I think that 68000 board was one of these: http://retronik.fr/motorola/68K/68020/The_DEFINICON_68020_Coprocessor_[bYTE_1986_%2028p].pdf

DOS was natural for me after CP/M and OS/A+. My barrier to Windows was the constant "are you sure?" badgering.

Gunstar, keep the ST images coming! May you live long and prosper!

One of the first peripherals bought for that AT was a Logical Devices Shooter EPROM programmer with RS232 interface. Had its own UI so all you needed was a terminal program. Still have it and it still works!

Ah, yes, musical diapers. How could I forget? We also bought an ISA board with a 68000 and its own RAM for use as a coprocessor. I don't remember its name but it was featured in BYTE in the latter 80s. Anyone recall it?

Probably some multifunction RAM / I/O board for the PC-AT on my desk at Meridian Instruments, I don't remember. More interesting were the peripherals we developed in the late 80s. An ISA to S100 extender and S100 boards: Z80 based stepper motor controller; ADC / DAC interface, for our scanning laser microscope. Later we made ISA versions of those boards and dropped the S100 box. We also made some peripherals using the 8048 microcontroller: a laser controller with serial port; a parallel printer buffer; a focus motor controller; a variable pinhole controller; a bus mouse interface. The 8041 variant was useful as it could connect directly to the ISA bus with very little glue logic. We used it for hobby projects: a MIDI output port; a scanning mirror controller for laser light shows. It was the Arduino of its day. Good times!

Have you reseated all the ICs in their sockets? I added your number to the serial number thread linked above. Follow it and its sister thread about 400s to see how we deduced the date codes.

Nice! If it still flakes out, open it up and reseat the ICs. Please post its numbers in this thread: http://atariage.com/forums/topic/242227-calling-all-800s/page-1

Wow, one more from 1979: http://atariage.com/forums/topic/288920-early-atari-800/ It's almost 40 years old!