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TIMXT Terminal Emulator Dev


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#1 InsaneMultitasker OFFLINE  



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Posted Sun May 14, 2017 2:27 PM

During the past few weeks I've been mulling over how to proceed with TIMXT and its development.  The code base needs some TLC and many of the routines could be more efficient if I just bit the bullet to rework or rewrite them.  I figured a development thread might help me collect my thoughts and share the periodic update. On that note...


A few AA members  (i.e., Paradroyd, duhproject) have twitter feeds where they post pictures of various BBS systems they connect to.  I noticed a few cool C64 BBSs and was curious how the color and graphics were being interpreted.  The C64 palette and character sets are different from the TI, and PETSCII has its own way of moving the cursor and controlling which graphics set to use. 


With the F18A, we can adjust the palette and use the text mode attributes to display colors, just like TIMXT handles ANSI colors today.  So I thought a good approach to redoing the core interpreter would be to try my hand at emulating PETSCII.


This week I incorporated the C64 extra graphics (thanks to Sometimes99'ers font collection) and finished all but two control routines for displaying the graphics and colors. The terminal window is hard-coded for 80 columns, though I might try to allow for a 40-column color mode to get closer to the C64 experience.


Note:  Particles BBS allows for PETSCII in 40 and 80 columns; of course, I chose 80 for my call ;)    Also, a few pictures show "@" and "]" in place of horizontal and vertical lines; I did not realize until later that there is some uniqueness to the PETSCII character sets that required me to redefine a few more characters.  Scorps portal has been down so I couldn't retake the photos. 


Don't mind the terminal status bar - I haven't updated it.  What you are seeing is PETSCII at 38.4K.


1. PLACEHOLDER - Current Release Files


Shift838 pulled the EA5 and FR99 images together.  This version is from early 2017 and should work with the standard RS232 and the nanoPEB.  Macros cannot be saved/loaded in this version; that will be corrected in the future.


Attached File  TIMXT_NANO.zip   13.56KB   5 downloads  EA option 5 files

Attached File  TIMXT_NANO.bin   32KB   5 downloads FR99 bin file

Attached File  TIMXT-v02c-2017-01-NANO-EA5.dsk   90KB   2 downloads  disk image (thx Schmitzi)


** The PETSCII version has not yet been released **


2. PLACEHOLDER - hardware configurations

TI terminal emulators generally do not support hardware handshaking.


a. TI/CorComp/Myarc RS232

The following cable is NOT configured for any RTS/CTS hardware handshaking, so be sure to turn it off if your modem is configured.  AT&K0 is one common command to shut down handshaking. 


RS232  - modem device


1     - 1
2     - 3
3     - 2
6     - 20
7     - 7
20    - 6


b. NanoPEB Serial - a standard DB9 to DB25 serial cable works well with the nano.  The nano's rs232 port is configured similar to that of a PC for easy connectivity.  This also means if you roll your own cable, be aware that the pins will be different. 


c. uberGROM cart UART

Connecting the UART to a modem device requires either a TTL-to-RS232 converter or a device that can operated at TTL levels.  There are only three required connections:  Ground, Receive, and Transmit. 



3. Links to other relevant threads:

RS232 Interrupts:  http://atariage.com/...2/#entry3462424

NanoPEB Serial thread:  http://atariage.com/...opeb-version-1/



**Edit: added placeholders for files and configurations

Attached Files

Edited by InsaneMultitasker, Sun May 21, 2017 3:20 PM.

#2 matthew180 OFFLINE  


    River Patroller

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Posted Mon May 15, 2017 12:05 AM

Nice work!  That is looking really great.  Adjusting the palette to match the C64 colors is a nice touch.

#3 Paradroyd OFFLINE  


    Space Invader

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Posted Mon May 15, 2017 4:27 PM

That's really looking good!


#4 InsaneMultitasker OFFLINE  



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Posted Mon May 15, 2017 10:09 PM

I am using tcpser as my 'modem' with a cable connected between the ubergrom cart and PC. I was having trouble with some systems and could not figure out what was wrong.   Paradroyd gave me a few ideas and bbs raw data image saves to play with, which then led me to installing a copy of Wireshark so that I could look at the packets being sent to tcpser and ultimately, to TIMXT. 


I found out that in addition to C64 PETSCII codes, there are other controls that systems like the C128 use (i.e., flashing, underlining).  TIMXT was not taking these into account and as a result, the screens were coming out wrong.  Here is a good before and after example :)


Attached Files

#5 duhproject OFFLINE  


    Combat Commando

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Posted Wed May 17, 2017 2:35 PM

This is freakin' amazing! Well done. Can't wait to get my mitts on this. You'll need to pop up a PayPal tip jar or something for this!

#6 InsaneMultitasker OFFLINE  



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Posted Sun May 21, 2017 2:05 PM

Added some preliminary information and release files to post #1.  If you have info that would be helpful to place in the post, send me a PM or share it here for inclusion.


FYI,  I haven't released the PETSCII version.  I need to finish a few changes to the interpreter before that happens.  Memorial day weekend was going to be a programming weekend but family plans have made that unlikely. :ponder:   I might be able to share a test version out there this week, we'll see...

Edited by InsaneMultitasker, Sun May 21, 2017 4:36 PM.

Also tagged with one or more of these keywords: TIMXT, BBS, Terminal Emulator, ANSI, PETSCII

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