+arcadeshopper Posted February 23, 2018 Share Posted February 23, 2018 Lots of great info except for one thing, what device is it? trying it on my cc-40 Greg Made one of these today, and was able to use my PC-324 printer on my CC-40.To use CC-40 peripherals on the 74, you just need to buy some 1x10 cables off of Ebay.I wonder if the 74 and the 40 have the capability of addressing each other over Hexbus? 1 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted February 24, 2018 Share Posted February 24, 2018 Lots of great info except for one thing, what device is it? trying it on my cc-40 Greg Found it.. in the TI-74 manual and now that i turned BOTH connectors around in that previous diagram (john's adapter showed me the truth) it works! 1 Quote Link to comment Share on other sites More sharing options...
+Ksarul Posted February 24, 2018 Share Posted February 24, 2018 Looks like we should make a small run of the adapter boards. . . 1 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted February 24, 2018 Share Posted February 24, 2018 Looks like we should make a small run of the adapter boards. . .I just used jumperwires Sent from my LG-H830 using Tapatalk Quote Link to comment Share on other sites More sharing options...
brain Posted February 24, 2018 Share Posted February 24, 2018 Looks like we should make a small run of the adapter boards. . . Now that Chinese New year is almost over, I'll submit an order for some PCBs 3 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted February 24, 2018 Share Posted February 24, 2018 How about the disk emulation how's that going? Greg Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted February 24, 2018 Share Posted February 24, 2018 How about the disk emulation how's that going? Greg When I first saw this I thought you said "desk emulation," and I was thinking, "that would be my floor." Quote Link to comment Share on other sites More sharing options...
+Vorticon Posted February 24, 2018 Share Posted February 24, 2018 Now that Chinese New year is almost over, I'll submit an order for some PCBs Definitely up for one of these. I've had a crude homemade one for years but this one is much better Quote Link to comment Share on other sites More sharing options...
+acadiel Posted February 24, 2018 Share Posted February 24, 2018 I sent Greg the super hi res magnified version yesterday 3 Quote Link to comment Share on other sites More sharing options...
brain Posted March 1, 2018 Share Posted March 1, 2018 (edited) How about the disk emulation how's that going? Greg Sorry about the delay. Had a few things on my bench I had to clear first. I think the disk emulation is good enough to send out. I am going to try to squeeze a small bootloader onto the uC so I can field update the code, and then I will kit up some units for folks to solder and try, using the original board I had run. With that complete, I'll await the bug reports that will no doubt arrive (I know there are gaps, but there always are), and then start laying out a production board. Not to state the obvious, but I would not trust the device with anything precious at this time. I am confident the FAT16/32 library is solid (it's a fork of FatFS that support long file names), but the HexBus protocol is still in flux. Jim Edited March 1, 2018 by brain 3 Quote Link to comment Share on other sites More sharing options...
+acadiel Posted March 1, 2018 Share Posted March 1, 2018 Sorry about the delay. Had a few things on my bench I had to clear first. I think the disk emulation is good enough to send out. I am going to try to squeeze a small bootloader onto the uC so I can field update the code, and then I will kit up some units for folks to solder and try, using the original board I had run. With that complete, I'll await the bug reports that will no doubt arrive (I know there are gaps, but there always are), and then start laying out a production board. Not to state the obvious, but I would not trust the device with anything precious at this time. I am confident the FAT16/32 library is solid (it's a fork of FatFS that support long file names), but the HexBus protocol is still in flux. Jim Sweet. We will see if we can figure out how to maybe import existing CC-40 programs onto the card to try them out. Can't wait! BTW, I put a close up of the 74 Dockbus to CC-40 Hexbus adapter pinout a couple messages about this reply if you want to double check that adapter board as well. Thanks! 1 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted March 1, 2018 Share Posted March 1, 2018 Not to state the obvious, but I would not trust the device with anything precious at this time. I am confident the FAT16/32 library is solid (it's a fork of FatFS that support long file names), but the HexBus protocol is still in flux. Jim Sooooo... I should cancel all the orders from hospitals? Seems rather imprudent. 1 Quote Link to comment Share on other sites More sharing options...
TI998owner Posted March 1, 2018 Share Posted March 1, 2018 Hi Jim, Sounds Great. No problem on offering to help with De bugging the new board for CC-40 floppy emulation. Do you also have any extra preproduction boards You might want to sell ? Also have you had any Time to draw a working schematic of the new Design ? , Thanks for any help or info Lee Quote Link to comment Share on other sites More sharing options...
+acadiel Posted March 1, 2018 Share Posted March 1, 2018 Hi Jim, Sounds Great. No problem on offering to help with De bugging the new board for CC-40 floppy emulation. Do you also have any extra preproduction boards You might want to sell ? Also have you had any Time to draw a working schematic of the new Design ? , Thanks for any help or info Lee Hey Lee - someone said you might have some developer docs on the CC40. I understand you have a lot of spare units and the programming hardware from previous emails. What kind of documents do you have? Thanks! Sent from my Moto Z (2) using Tapatalk Quote Link to comment Share on other sites More sharing options...
brain Posted March 2, 2018 Share Posted March 2, 2018 Sweet. We will see if we can figure out how to maybe import existing CC-40 programs onto the card to try them out. Can't wait! BTW, I put a close up of the 74 Dockbus to CC-40 Hexbus adapter pinout a couple messages about this reply if you want to double check that adapter board as well. Thanks! I've already done this. From the TIIF2 archive (Peter Engels), get onto a DOS box and use the TIFR TIC95.exe executable. I converted all of the apps in the cc40 papers text file. 1 Quote Link to comment Share on other sites More sharing options...
brain Posted March 2, 2018 Share Posted March 2, 2018 Hi Jim, Sounds Great. No problem on offering to help with De bugging the new board for CC-40 floppy emulation. Do you also have any extra preproduction boards You might want to sell ? Also have you had any Time to draw a working schematic of the new Design ? , Thanks for any help or info Lee Actually, I was going to kit up the pre-prod boards and sell them. Then, I was going to take suggestions on the prod board (I know folks want dual hex bus connectors, but what footprint, etc. Jim 2 Quote Link to comment Share on other sites More sharing options...
+acadiel Posted March 2, 2018 Share Posted March 2, 2018 I've already done this. From the TIIF2 archive (Peter Engels), get onto a DOS box and use the TIFR TIC95.exe executable. I converted all of the apps in the cc40 papers text file. I remember someone here (Vorticon?) had quite a few programs as well. Thanks, Jim!!! Sent from my moto x4 using Tapatalk Quote Link to comment Share on other sites More sharing options...
+acadiel Posted March 2, 2018 Share Posted March 2, 2018 Actually, I was going to kit up the pre-prod boards and sell them. Then, I was going to take suggestions on the prod board (I know folks want dual hex bus connectors, but what footprint, etc. Jim Count me in. I'm also going to try to post some high res pics of the cassette interface cable here in the next week or two for the TI-74. I finally got ahold of one a few weeks ago. I'll also dump the cassette saves as well; whomever does the 74 emulation in MAME might be interested in how the format different from the 4A. I'd also like to take a CC-40+ cassette program that I saved and see if the 74 reads it. Sent from my moto x4 using Tapatalk Quote Link to comment Share on other sites More sharing options...
TI998owner Posted March 2, 2018 Share Posted March 2, 2018 Hi Jim, Thanks for the reply back about the preproduction boards. Let me know when you are ready, cost and such. Just drop me a e-mail Also any word on a workable Schematic Diagram ? Quote Link to comment Share on other sites More sharing options...
+acadiel Posted March 4, 2018 Share Posted March 4, 2018 Jim, I’m guessing you mean this for a 39SF040 chip, correct? Remove the traces between the circled pads and join the bottom ones? Quote Link to comment Share on other sites More sharing options...
brain Posted March 4, 2018 Share Posted March 4, 2018 Acadiel: Yes JIm 1 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted March 6, 2018 Share Posted March 6, 2018 Got this in the mail today with a 8k card in it even with good batteries Sent from my LG-H872 using Tapatalk 3 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted March 6, 2018 Share Posted March 6, 2018 I love my 74. Used it in my bio and chem classes in both calculator and BASIC mode with a couple of programs I wrote for the latter. Mind you, since I have no way to save them they were pretty simple programs It is a fantastic statistical calculator. 1 Quote Link to comment Share on other sites More sharing options...
+arcadeshopper Posted March 14, 2018 Share Posted March 14, 2018 Still working on it. Real Life has slowed me down (we have a large migration going on tomorrow), so time has been short. But, I do have the dev boards back. Jim Finish that migration yet? Greg Quote Link to comment Share on other sites More sharing options...
brain Posted March 15, 2018 Share Posted March 15, 2018 Hi Jim, Thanks for the reply back about the preproduction boards. Let me know when you are ready, cost and such. Just drop me a e-mail Also any word on a workable Schematic Diagram ? The entire project is at https://github.com/go4retro/HEXTIrand the schematic is at: https://github.com/go4retro/HEXTIr/tree/master/pcb Was there something else you wanted? Quote Link to comment Share on other sites More sharing options...
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