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Everything posted by daafies
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Serial cable and software for TI-99 terminal *output*
daafies replied to Zerock's topic in TI-99/4A Computers
Got it to work. Thanks for the help! Sent from my iPhone using Tapatalk -
Serial cable and software for TI-99 terminal *output*
daafies replied to Zerock's topic in TI-99/4A Computers
Exactly what you describe. Telco on ti and i tried a variety of pc programs. Ill go over the cable again when i get home. Thanks for confirming the wiring for the cable. I dont have the RI and chassis ground tho. Maybe thats it. -
Serial cable and software for TI-99 terminal *output*
daafies replied to Zerock's topic in TI-99/4A Computers
link didnt work. heres the table: DB9 - DB25 conversion DB9 DB25 Function 1 8 Data carrier detect 2 3 Receive data 3 2 Transmit data 4 20 Data terminal ready 5 7 Signal ground 6 6 Data set ready 7 4 Request to send 8 5 Clear to send 9 22 Ring indicator -
Serial cable and software for TI-99 terminal *output*
daafies replied to Zerock's topic in TI-99/4A Computers
greg, thanks. i made a 25 to 9 cable. using the pinouts here: https://www.lammertbies.nl/comm/cable/RS-232.html scroll down to " RS232 DB25 to DB9 converter" (minus the RI) however no luck :/ -
Serial cable and software for TI-99 terminal *output*
daafies replied to Zerock's topic in TI-99/4A Computers
straight through, meaning rts on rts, cts on cts, txd on txd, rxd on rxd, cd on cd, dsr on dsr, dtr on dtr, sg on sg ? thanks -
Thanks for reply! Sorry havent looked at the 5200 in a while. Next time i pull it out ill check. Thanks for trying to help! Sent from my iPhone using Tapatalk
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here's a pic of the board. i couldnt find a brand/model :/ i talked to Ian Mavric and he suggested adding a terminator, however that also did not help. i might need a new FDC. but for now i am OK with just running the HxC as internal drives 0 and 1. who wants to use floppy's nowadays anyway
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TI-99 Photos Thread! Post your systems here!
daafies replied to slinkeey's topic in TI-99/4A Computers
how did you mount the display of the hxc? is it glued in? thanks david -
thanks let me check. not sure what models they are.
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nice! that's actually a pretty good price if you ask me. specially for a working one and all the goodies coming with it. i think i have a similar later model with the green screen and arrow cluster. enjoy!
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yay i can boot trsdos of the HxC i took out the old drives for now and hooked the HxC to the internal port. i wanted to try to test the external drives by attaching them to the external port, but trsdos does not see them. in basic i can "out 244,X" ok. i assume the internal port is drives 1 and 2 (order decided by cable?) and external port is drive 3 and 4?
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hi all, i attached my HxC to my model4 and its acting as drive 1 and 2. now i tried hooking up the old internal ones to the external port for testing, but it's not being recognized by trsdos. in basic i can do "out 244,3" and the drive spins up. am i forgetting something? thanks david
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Spoke to Ian, and apparently earlier model 4s had a bug that prevented the diskette? prompt to be displayed. Inserting a floppy without closing the door does cause a diskette? prompt:) Now on to install the HxC Sent from my iPhone using Tapatalk
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update! i got Ian's board in the mail, and narrowed the problem down to the roms in U68 and U70. rom a and rom c if i'm not mistaken. now, without the fdd board attached i get the CASS? prompts and i can go into basic. YAY! but, (of course) with the floppy controller attached, i do not get the "diskette" prompt. just a blank screen. the drive spins up tho. pressing break and reset i can go into basic again and do "out 244,1" and disk 0 spins up again. so it can access it ok it seems. i dont have a floppy to try, but i can hook up the HxC floppy emulator to see what happens. am i supposed to see the diskette promt? PS Ian did mention, and i can confirm, when in model 3 basic the cursor does not blink. so there could still be some other an issue with the ROMs thanks! david
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it works! i have the following: TI <-> printer 1 1 (strobe) 2 2 (data1) . . 9 9 (data8) 10 11 (busy) 11 19-30,33 (GND) thnk you Lee!
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Yes i saw the cool diagram, thanks ill try the busy pin first before shorting grounds Sent from my iPhone using Tapatalk
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Hi Lee, thanks! Ill try busy line instead of /ACK. Also look like you can just short all grounds. Sent from my iPhone using Tapatalk
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so i decided to hook up my citizen 120D to my ti-99/4a. but no luck so far... in XB i do 10 open #1:"PIO" 20 print #1:"blabla" 30 close #1 but no output and program is stuck. FCNT+4 (CLEAR) give error 36, which means "hardware error or pressing CLEAR to stop reception of a pending or in progress operation" printer is set to epson FX mode and works with my apple 2c and trs-80 model 100. i made a cable like so (following printer and PHP1220 manual): TI <-> printer 1 1 (strobe) 2 2 (data1) . . 9 9 (data8) 10 10 (ack) 11 19-30,33 (GND) according the php1220 pins 11 and 16 on the ti are "logic ground". but according to the tech pages (http://www.unige.ch/medecine/nouspikel/ti99/pinouts.htm) they are GND. the printer manual lists ground pins (19-30,33) AND a logic ground pin 16 (logic ground 0V level, source is printer) .... should this pin be shorted to the other ground pins perhaps? thanks! david
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Yea i replaced both the .22 and .01 (if i remember the values correctly) Measured and voltages look ok . +11.97 , -11.99, 4.98. ish. I used an atx power supply at some point also. No difference. I like Digikey also, but jameco is close to my home so i can so will call Sent from my iPhone using Tapatalk
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update: i also replaced the u21 with a 'new' chip from ebay, but no difference. i guess the leaves the ROMs and PALs. i'm in contact with a gentleman called Ian in Australia. he might have a spare board
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enjoy!
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Yea i saw that. I've emailed number of times over 2 month period... its too bad :/ will keep trying thanks
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does anyone know what happened to http://www.club100.org? i used their order form to order some things but never heard back.
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Does this cable connect to the pio oh the php1220? Do you have a diagram for this? Doesnt look like the port has a strobe and busy pin. Thanks!