ClausB

And just what century is your TI from?

Member Larry made a flash cart version some years ago. Search for it.

Then there's the other extreme, stupid comments like: LDA #8 ; Put an 8 into A Over-commenting can make bugs harder to find, as you tend to read the comments and believe that's what the code does, instead of reading the code to see what it really does.

Out of paranoia, I left the innards at home. I had a poster board with the same color photos from that thread along with descriptions. Maybe it looked too much like a science fair project. One of our AA members did take interest but was disappointed at the empty shell on display. I wanted to have it running at the show but lacked the time to prepare. I don't mean to discourage anyone from presenting a nicer 40th anniversary display. I look forward to seeing what happens. Maybe VCFW would be more Atari-friendly. VCFMW is half Commodore.

In 1981 I bought the Axlon 32K board for my 400. It was called RAM-Cram then, presumably before they hired a marketing guy.

I used to be sharp enough to code without comments, at least on small jobs. By the time that grew into ACE80 though, I did need to add some comments.

I displayed my 1978 pre production 800 at VCFMW for its 40th birthday but there was very little interest.

Don't know the Microbee but the Sorcerer has a 64 by 30 character screen and a RAM based character set, giving 512 by 240 resolution, good for games. BTW the tape sim runs at 20833 baud, over 1.8 KB/sec, as fast as some floppy drives from the day.

The previous tape sim was one way, from Arduino to Sorcerer, so it cycled thru all the files in a continuous loop. The more files, the longer it took. This Teensyduino version has two way serial comms, so it prints a menu and waits for a keypress, then loads the one selected file. Much better. That's a Teensy 3.1 which has 256K of flash, room for a dozen files or so. Next version will be on a Teensy 3.5 which has an SD slot. Unlimited power!

Not surprising. ANALOG couldn't even predict the past. They filled my 5200 article with typos and then refused to print the corrections.

Probably the marketing guy's ignorance, misquoting the programmer.

My first modem was kit built. Whole thread about it: http://atariage.com/forums/topic/223411-1981-sio-modem

Since my Sorcerer I has no case I hung it above the monitor on the desk's backboard. It looked dark and dingy so I added lights. Five green LEDs behind the board and white, red, and blue above it. They are driven by a data bus buffer chip so they flicker as programs execute. Those clip leads run to the Teensy 3 tape sim.

A 32K Axlon "RAM-Cram" for my 8K Atari 400. I watched the installer with wonder and fear as he opened the 400 and revealed the mysterious insides. That started my interest in digital electronics. I got to keep the now useless 8K board. Later I learned enough to mod the Axlon to 48K myself, using part of that 8K board.

http://atariage.com/forums/topic/285023-atari-800-memory-upgrade-question/?do=findComment&comment=4157802

You could start with a 16K board if you don't mind the extra work. See the other thread.

I have been thinking about picking up that torch actually. I plan to do an experiment this winter to see whether my idea would work.

Again, my 62K upgrade should be compatible with the "64K base XL" mode. It even uses PortB (you have to run a wire to the joystick port). That said, I never built and tested it but I'm willing to help you test and debug it, as I did for ebiguy.

Yes, 62K RAM is the most you can get without banking, because of the 2K I/O space, even in an XL or XE. It's always been called 64K mode but it's only 62K really. Axlon uses 16K banks too, although the banking register is not PORTB. Axlon upgrades won't help in playing 64K games.

Yes you could start with a 16K board instead of 48K, but it would take more work. You would have to reroute the power traces (look at my old 48K 400 instructions: http://atariage.com/forums/topic/123207-expanding-the-400/#entry1488304) and add the extra gates per the schematic.

Someone asked about 2 32K boards. They could be modded to give 62K, or they could be modded to give 160K, Axlon style. BITD I turned a 32K board into a 128K board: http://atariage.com/forums/topic/122750-64k-atari-800/?do=findComment&comment=1676834

This mod gives 62K: http://atariage.com/forums/topic/185500-using-the-atari-400-48k-board-in-the-800/page-2?do=findComment&comment=2731076

No but this one gives 52K. http://atariage.com/forums/topic/185500-using-the-atari-400-48k-board-in-the-800/page-2?do=findComment&comment=2727204 Though it's not compatible with this 256K mod.

Don't order another 48K board. I'll help you fix the first one.

There are 8 power pins at one end of the board and 8 data bus pins on the other end. Possibly, only the chips with data bus connections might have been damaged, and of those, only the ones which were accidentally connected to -5V and +12V. So that is 4 of the 4164 RAM chips and the 74LS244 buffer chip.