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Found 9 results

  1. This is a more targeted continuation of the blatantly hijacked thread <here>. Executive Summary of this go-forward: The NanoPEB being periodically peddled on eBay is a wonderful little device, providing 3 virtual disk drives which map to a Compact Flash card, a 32K RAM expansion, and an RS232 serial port. Unfortunately, the serial port was set up in such a way that virtually all existing Terminal Emulation software packages take one look at that serial port, and promptly throw their dish on the floor. The technical details of that I leave to vaster minds than mine to explain. Meanwhile, I have slapped together what I think is a toy many of us would like to have and use, a WiFi modem that is RS232 compatible and doesn't cost an arm and a leg. The prototype has been proven with several IBM-ish 8088 machines, and I have been surfing Telnet BBS's with it. I would like to test and use it with my TI-99/4A plus NanoPEB, but the terminal software always stops me, since none of them like my serial port. My current quest is to find, make, beg, borrow, steal or barter a package into working with the NanoPEB. The ultimate goal is to publish details of this very simple modem, so that others in this community can make their own for less than $10 and a few minutes work, and go BBS surfing using their household WiFi, Telnet, and a T-99/4A with either an "original" serial port or a NanoPeb. I'll explain how once it's tested, as I don't want folks clamoring to build one only to find that it doesn't work in this plane of existence. The modem itself works in another environment, but I'm a firm believer in end-to-end systems testing. Besides, I have a NanoPEB, so I'm greedy and want it to work with my TI-99/4A. So that's the lay of the land. In our last episode (thread) InsaneMultitasker had generously thrown me a software package thinking it might work. I'm sorry to report that it doesn't. It runs well up until the moment any byte is actually sent down the line, then it crashes. (Cursor stops blinking, and no keys respond.) To be thorough I connected a null modem cable between the NanoPeb and the modem, (they normally dock directly), but the behavior was the same. The quest continues,...
  2. What Is It? Hayesduino is an Arduino sketch that provides a bridge between the world of the Internet and small devices that do not have built-in ethernet capabilities. Old computers, such as the Commodore 64, Apple II and Atari 800 have serial ports, but do not have readily available Internet solutions with wide software support. While specialized solutions do exist for these platforms, they all require specialized software to use them and do not lend themselves to more general usage such as simply opening a socket, sending some data, and/or receiving some data. Hayesduino bridges this gap by emulating a Hayes compatible modem. This allows users to initiate Internet communications via sockets that are opened by "dialing" to a hostname and port. An example would be initiating a telnet session with a host by simply typing atdt hostname:23 and waiting for the host to respond. Using this technique, any online socket can be reached and communicated with. Hayesduino could have accomplished this without emulating a modem, but there needed to be a good way to allow the small machine to receive incoming connections. The three platforms listed above were all very popular systems for hosting BBS (bulletin board systems) which would accept calls over a telephone line via modem. Hayesduino simulates the incoming phone call whenever the software receives an inbound connection on port 23 (this is changeable in the code). When an incoming connection is detected, the Hayesduino will toggle the DCE-DCD line to trigger the remote software to answer the incoming "call". In this way a classic BBS can be hooked up directly to the Internet. http://hayesduino.codeplex.com
  3. If capturing text from your Arduino to a terminal buffer is all you want to do, you are lucky. You may want to collect data and use it in your own programs. Unfortunately there are not a lot of example programs to learn from and the 850 interface manual can be cryptic for us mortals. Persistence does pay off. Usually the “let’s try this” style of debugging will eventually get you to the proper combination of port settings and program logic. I wanted to hook up a sensor to the Arduino and then read the output through the RS232 port using Atari BASIC. I choose the ultrasound sensor. It will measure the time it takes a sound wave to travel from the sender to an object and back. If you know the speed of sound you can calculate the distance. Now you can imagine that by moving your hand in front of the sensor you can program the SOUND command to change pitch. You can imagine it but doing it may not be so practical. The Arduino Side There are several manufactures of ultrasound sensors. Some will have 3 pins, some will have 4. Both have a +5 volt and GrouND pins. If the sensor has 4 pins, one will trigger the sound pulse and the other change logic states when it senses the sound. I am using the Parallax Ping))) sensor. One data pin is used as output to trigger the pulse. Before the pulse can travel back from an object the pin is set as input. The Ping))) sensor was previously wired and running using an example program in “Arduino: A Quick-Start Guide”. Remember, the Arduino has to be programmed prior to installing the RS232 shield. The following program was uploaded, the RS232 shield installed and the Sensor was wired to pin 7, +5 volt and ground. // Modified Program to read Parallax PING))) sensor// Send time ultrasound travels to objectconst unsigned int pingPin = 7;const unsigned int baudRate = 9600;void setup(){ Serial.begin(baudRate);}void loop(){ pinMode(pingPin, OUTPUT); digitalWrite(pingPin, LOW); delayMicroseconds(2); digitalWrite(pingPin, HIGH); delayMicroseconds(5); digitalWrite(pingPin,LOW); pinMode(pingPin, INPUT); const unsigned long duration = pulseIn(pingPin, HIGH); if (duration == 0) { Serial.println(0); }else { Serial.println(duration); } delay(25);} The program can be tested by reading the input with a terminal program or the Arduino IDE through an RS232 port. Or, remove the shield and wire up the sensor, then read the data through the USB port. The ATARI side The first thing you may want to do is connect the Arduino to the 850 and read the data stream using a terminal program on your 8 bit. Be sure to set the baud rate at 9600. The BASIC program was derived from an example in the 850 manual. Appendix 9 – User Programs, 5. Reading a Digitizer: More Input Than BASIC Can Handle (Page 77-78). The Arduino is programmed to continuously send data to a buffer. The Atari asks for input slower then it is being placed in the buffer. When the buffer is full the Arduino overwrites the data. To keep the buffer in sync with the Atari, a double input method is used in line 100. Read the buffer the first time to empty it and then the second time retrieves the latest reading. (I recommend finding a copy of the manual to read.) The first test program reads the data from the Arduino and prints out the text input and the value. Getting the SS$ into a floating point variable was a little more involved then INSS = VAL(SS$). The first problem was that a graphic character (CHR$(10)?) was placed at the beginning of the data. Not sure where it came from but it needed to be ignored. The second was knowing where the string ended. Line 105 and 110 were used to take care of this problem (most of the time). 10 DIM SS$(10):REM holds input from sound sensor20 XIO 36,#1,15,0,"R1:":REM set baud30 OPEN #1,5,0,"R1:":REM open port40 XIO 40,#1,0,0,"R1:":REM start I/O100 INPUT #1,SS$:INPUT #1,SS$:REM clear buffer,get reading105 X=LEN(SS$):REM Length of text string110 INSS=VAL(SS$(2,X)):REM convert text to floating point120 ? SS$,INSS:REM print data to screen130 GOTO 100:REM do it again Now it was a matter of scaling the INSS variable for the SOUND command. That was easy but…….. it was not expected that the SOUND would turn off when the INPUT command was executed . I tried a few things to see if it would stay on but to no avail. This listing is just the last iteration that was tried. 10 DIM SS$(10)20 XIO 36,#6,15,0,"R1:"30 OPEN #6,5,0,"R1:"40 XIO 40,#6,0,0,"R1:"100 INPUT #6,SS$:INPUT #6,SS$102 CLOSE #6105 X=LEN(SS$)110 INSS=VAL(SS$(2,X))120 ? SS$,INSS125 SOUND 3,INSS/31,10,10126 FOR Y=1 TO 100:NEXT Y130 GOTO 30 This last program simply uses a simple calculation to estimate the distance from the sensor to the object. It might come in handy for a security system or if you’re building a robot with an Atari brain. It was noted that every so often a string length error would occur. I would bet that when this happened the string variable SS$ was empty causing a length error when trying to read SS$(2,0). This was solved with the TRAP 100 command. Anytime an error occurred it would try again. 10 DIM SS$(10)20 XIO 36,#6,15,0,"R1:"30 OPEN #6,5,0,"R1:"40 XIO 40,#6,0,0,"R1:"100 INPUT #6,SS$:INPUT #6,SS$102 TRAP 100105 X=LEN(SS$)110 INSS=VAL(SS$(2,X))120 ? INSS/29/2;" CM"126 FOR Y=1 TO 100:NEXT Y130 GOTO 100 In hindsight I might have started with a lower baud rate and picked another sensor. Optimization of hardware and software will have to wait for another day and another project. Reference: Analog Computing Pocket Reference Card, The, Analog Computing Magazine, 1985 Atari DOS 2.5: 1050 Disk Drive Owner’s manual, Atari Corp. 1985, CO72033-001 Rev. A. Atari 850 Interface Module Operator’s Manual, Atari, Inc. 1980, CO15953 Rev. 1 Poole, Ion, Your Atari Computer, OSBORNE/McGraw-Hill 1982 Schmidt, Maik, Arduino: A Quick-Start Guide, Pragmatic Programmers, LLC. 2011. (Page 87-93)
  4. I asked a similar question on stackoverflow, but I figured I'd ask here as well. I use the Hatari (Atari ST) emulator on a Mac. Since there are a number of Atari ST BBSes out there still today, I'd love to be able to connect to them using a VT-52 compatible Atari terminal program, like Freeze Dried Terminal, TAZ, or VanTerm. But how can I get Hatari to work with telnet? I see that Hatari offers RS232/serial emulation. The manual suggests writing Hatari RS232 input/output to a file like /dev/ttyS0. And I found something called socat that lets you transfer data between various channels. So: is there a way to make socat take a telnet session and pipe it into a file that can be read by Hatari's RS232 emulation? Any ideas? I'm a unix novice, but I'd love to get this to work.
  5. Within the Atari 800 computer manual is a program called Computer Blues. "This program generates random musical notes to "write" some very interesting melodies for the programmed bass." Maybe the first program I typed in . That same program is in the 1030 XE manual. It was while listening to this program and trying to figure out what to do with an Arduino MIDI shield that I thought, "What would Computer Blues sound like if played through a synthesizer?" Gone is my MIDI Mate, CZ-101 and Roland keyboard controller. The TG-33 and DH-100 have been in storage for quite some time along with the ST and the USB to MIDI cord for the Windows computer. A Casio CTK-481 was acquired in a trade and has been neglected until now because now is the time to find out what Computer Blues would sound like on a synthesizer. I don't remember there ever being an easy way to output midi commands to a MIDIMAX (or MIDIMATE) using Atari BASIC. The more I learn about the MIDI controllers and the MIDI standard the easier it is to imagine experimenting using BASIC. Speed and timing may be a disadvantage for BASIC but a quick and easy way to implement ideas may be an advantage. The plan is to convert the SOUND commands to MIDI command data and send it out to the "R2:" port on the 850. "R2:" will be attached to a RS-232 to TTL converter shield attached to an Arduino Uno. The Arduino will read and retransmit the data through a MIDI shield to the sound synthesizer. The serial port baud rate limit of the 850 is 9600 and the MIDI port will be 31250. Shouldn't be a problem for the Arduino to keep up with the Atari. The RS232 Shield Link sprite Store http://store.linksprite.com/rs232-shield-v2-for-arduino/ LinkSprite RS232 Shield V2 for Arduino is being used to read the RS232 signal from the 850. This board has the option of setting jumpers to use D0 to D7 for the TD and RD lines. D5 and D6 are the first available pins and will require the SoftwareSerial library for communications. To test the shield, the "hello world" program from the RTC project was used with Bobterm. I had problems receiving the data until I switched the jumpers around. Someday I hope to be able to make the connections between RS232 devices and have it work the first time, but not today. The MIDI Shield New version https://www.sparkfun.com/products/12898 This SparkFun MIDI shield has been in my shield collection long enough to have been replaced by another version. The old version requires you to use the Hardware serial lines where as the new version allows you to cut some traces and make the new connections. The shield has a PROG/RUN switch that needs to be set to PROGram the Arduino or RUN the program. It is an experimenters board and has 3 push button switches and 2 analog resistors that can be used as programmable controllers. Pins D0 and D1 are used for serial communications and D2-4 are used by the push button switches. https://www.arduino.cc/en/Tutorial/Midi The shield can be tested using the program in the Arduino MIDI Tutorial (It’s a quick read). Connect a MIDI cable from the MIDI OUT on the shield to the MIDI IN of the synth. Stacking the shields makes all the necessary connections. There are no wires. If you don't use the shields a RS232 to MIDI OUT can be constructed for less then $25. A Uno knockoff and ultra compact TTL to RS232 converter can be had for less then $10 each. A 5Pin-DIN socket and 2-220 ohm resistors should be less then $5. Your biggest expense will be the 850 or PR: connection. Wrap it up All the parts seem to work. Next step will be to sit down and write the Arduino program to read the NoteOn data from the Atari and output it to the MIDI device. Then an Atari BASIC program to send the midi commands to turn on and off a note. When that happens the hard part will be over. References: You may find some of these interesting and informative. MIDI Reference Tables https://www.midi.org/specifications/category/reference-tables MIDI Message Chart- https://www.midi.org/specifications/item/table-1-summary-of-midi-message MIDI Control Change Messages https://www.midi.org/specifications/item/table-3-control-change-messages-data-bytes-2 MIDI note number chart http://newt.phys.unsw.edu.au/jw/notes.html How to read MIDI implementation chart(wish I had this 30 years ago) http://midi-tutor.proboards.com/thread/119/interpret-midi-implementation-chart Tutorial on midi data and file structures. Program examples for QuickBasic. MIDI Programming Part 1: MIDI File Basics - MystikShadows http://www.petesqbsite.com/sections/express/issue18/ MIDI Programming Part 2: Data Structures And Timing Formulas - MystikShadows http://www.petesqbsite.com/sections/express/issue19/ Atari's Sound System by Bob Cockroft - ROM Magazine #10 Gives Atari values for specific Notes and more http://atarimagazines.com/rom/issue10/sound_system.php Notes and Volts - Electronics, Guitars and Geekery http://www.notesandvolts.com/
  6. k-Pack

    RTC v2.1

    I wanted the RTC project to be over but it wasn't long before daylight savings kicked in and I needed to reset the clock. All I wanted to do was be able to run a program on the Atari8 to set the time on the RTC and then have it rerun the SETCLOCK.BAS to update the clock on the Atari8. And as long as I was going to do that I may as well reconfigure the hardware and………. . So by the time I was finished it needed to be called version 2.1. Hardware: When I found Arduino Uno clones for $6.50 it didn't seem cost effective to build my own PCB. Then the price of the bare Sparkfun prototype shield seemed reasonable so I used one of those. The parts list for the shield: Prototype shield and pins RTC module RS232 to TTL converter module Set CLOCK push button 10K Resister LED 330 ohm Resister Micro switch for Arduino reset on shield. (not required, you can hold down set button and turn power off and on) The schematic shows the pin usage and wiring. How you place your components may be different. There is more then one design of prototype shields and components. This time the power for the RTC module is supplied by Analog pin 2 and 3. The pins were set for output and pin 2 was set to Low(ground) and pin3 was set to HIGH(+5V). The RS232 converter is wired to digital pin10 and 11. This allowed the USB serial on pin D0 and D1 to be used for programming and power. The softwareSerial library was used to send and receive data to the Atari8. (This also created the option of using both USB and RS232 ports at a later date.) The set time button is used to activate the routine to receive RTC data from the Atari8. Press the button then power up the unit or press the reset button. The LED should turn on, indicating that the Arduino is ready to receive the data from SETRTC.BAS program. SOFTWARE: The arduino sketch and atr disk image are contained in the .zip file. RTC_v2_1.zip Of course the Arduino software was rewritten. Version 2.0 tested the softwareSerial library. (http://www.arduino.cc/en/Reference/SoftwareSerial) Once that was working the set RTC function was implemented and called v2.1. (I know someone is going to want to know what happened to version 2.0. ) The SETCLOCK.BAS program is still the same program as before and is run by the same AUTORUN.SYS file. The SETRTC.BAS is new. Once the Clock is running and you want to reset the time on RTC; run this program. It sets up the 850 for serial output then gathers the time/date information. Although the Atari Clock uses only the time data, the RTC needs the date data to reset.(who knows, some day you may need the date.) There is no AM/PM option; time will need to be military time. The computer then waits for you to put the Arduino in set time mode. Press the button and then press the reset button. When the LED lights the Arduino is ready to accept the data. Press RETURN on the Atari. The Atari8 then sends the data to the RTC and runs SETCLOCK.BAS to resets the ATARI clock with the new time. Can it be any simpler? Since I expect this to be a one of a kind project. Feel free to use this as reference or modify it to suit your needs. Even if you're trying to use it with your RS232 equipped C64.
  7. After hearing Computer Blues through a MIDI synthesizer, I can understand how some parents feel while hearing their child's first recital. Its not so much listening to the music as it is hearing the potential. It is in this spirit that I post these zipped sound files. Atari computer blues 8.m4a - the original sound from the A8 with 8 as the speed Midicb piano.m4a - recorded the Casio CKT-481 synth at speed 1 Midich organ.m3q - Organ sound Midich organ and drum - Organ with drum pattern. computer blues.zip Download this for the .ATR of the A8 files and the Arduino sketch. MIDI CB - program .zip The technical side: I wanted to make as few changes to the original program as possible. Follow along with a listing of the program CBMIDI2.BAS. 1000-1050 Data statements were converted from Atari pitch values to MIDI Note numbers. 9 consolidate lines 1-6 and move 8 to 15. Free up some line numbers at beginning of program. 1 REM program title information. 2 GOSUB 3000 sets up RS232 port for output to Arduino. 3000 Open R2: at 9600 baud - no translation 2500 Send MIDI command data subroutine Replace SOUND command with data setup and call to 2500 subroutine NOTE ON: 260 CMD=144:MIDINOTE=JAM(CHORD,NT),VELOCITY=NT*10+65:GOSUB 2500 535 CMD=144:MIDINOTE=LOW(CHORD):VELOCITY=60:GOSUB 2500 540 CMD=144:MIDINOTE=BASE(CHORD,THNOT):VELOCITY=60:GOSUB 2500 NOTE OFF: 700 CMD=128:MIDINOTE=LOW(CHORD):VELOCITY=0:GOSUB 2500 710 CMD=128:MIDINOTE=BASE(CHORD,THNOT):VELOCITY=0:GOSUB 2500 At this point the Computer Blues music was recognizable, although slow. The synth is able to play up to 16 notes at a time. This allowed 14 melody notes (+2 for the base) to be playing at the same time. When the 15 note was added the first note would tuned off. The following line was added to turn off the melody note before playing the next. Once in a while you'll notice that a note duration seems to be shortened. When the LASTNOTE = MIDINOTE, line 265 will turn off the melody note that was just started in line 260. This little quirk didn't degrade the song quality and may perhaps improved it. 265 CMD=144:MIDINOTE=LASTNOTE:VELOSITY:0:GOSUB 2500:LASTNOTE=JAM(CHORD,NT) The original goal of this project has been reached. It is possible to write Atari BASIC programs that can output MIDI data to a MIDI device, if you have an 850 and an Arduino with RS232 in/MIDI out. The speed of BASIC and the 850 interface will definitely impact most results. Trying to optimize the Atari BASIC code should increase its functionality. Then you also have to ask what happens when you let the Arduino do some of the work? Of course you could port Computer Blues directly into the Arduino, but where's the fun in that? Links to the two proceeding blogs The Hardware http://atariage.com/forums/blog/572/entry-13269-midi-computer-blues-setting-up-the-hardware/ Testing the Hardware. http://atariage.com/forums/blog/572/entry-13277-midi-computer-blues-note-on-note-off/
  8. Here's a link to what I suspect will be a plug and play replacement for a homebuilt rverter. I bought it already and will report. My purpose is to provide an RS232 port for my 8-bit to put Cheez Daddy's House of Funk back online using telnet instead of Ma Bell. https://www.amazon.com/MAX3232-Connector-Converter-Equipment-Upgrades/dp/B07PFB4MHR/ref=sr_1_5?keywords=max232&qid=1566430415&s=gateway&sr=8-5 ** TNM **
  9. I have opened up a pre-sale for HDX boards to modify your TI rs232 card to support the HDX1 DSR http://www.arcadeshopper.com/wp/?page_id=11#!/~/category/id=5051340&offset=0&sort=nameAsc For more information on HDX read on: Have you looked at Fred's site? http://home.vodafonevast.nl/fgkaal/Software/sw_ti99hdx.html#ti99hdx Basically HDX makes a network like connection over the rs232/2 port to a windows PC. It is a DSR replacement on the RS232 card and provides a device HDX1 that connects to software on the windows PC. Providing a "hard disk like" device to access v9t9 format files on the windows hard disk. Theoretically you can point classic99 to the same folder and run/access the files there on your PC without having to convert/move/copy them somewhere else. It also allows the use of TIPRINT on the windows pc to emulate printers and you can print to HDX1.PRINTER on the TI and it comes out on your windows printer. Both of these software packages can run on the PC with just a regular straight through serial cable. But to use them "seamlessly" on the TI requires the RS232 modification which uses the board I am selling. The board loads a new DSR into a battery backed static ram (very similar to minimem's memory as he borrowed that design) and that DSR has instead of RS322/2 it has the HDX1 device. A RS232 splitter cable is required to split RS232/2 off of the main connection for the connection to the PC. The cable required other than that is straight through DB25-DB9. To use HDX without the board you load the program CFHDXS1 on the TI and that allows a limited DM2K interface with HDX1 support built in. This is what I've used for months to transfer files to the TI from the PC, all I do is us TIDIR to put the files in my HDX files directory (or a sub directory) then load the software on the TI, go to HDX1. and there's the files and directories. Long as they are v9t9 format (TIDIR lets you easily convert to that if they are not) they come up and are copy, move, eXecuteable from CFHDXS1 or any program if you have the modified RS232 card. TIPRINT lets you print to RS232.BA=xxxxx. etc.. and it comes out on your PC's printer. Again with the HDX board modification you can print to HDX1.PRINTER and it will figure out the rest. There's also a Disk transfer program that works with the HDX board that will copy your disks from the TI directly to a DSK image on the PC in a "disks" directory. And you can copy DSK files back to real disks on the TI as well. I have used the software version with both Corcomp and TI rs232 cards and they worked fine. I haven't tested with anything else.. The modification of the card for the HDX board ONLY works on a TI card. No 3rd party cards. I am going to purchase a few extra RS232 cards and build them up with the HDX modification and offer them for sale if people are interested in the mod but not the build I am sure a few others are as well based on the quantities ordered from the pre-order. Greg
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