RickyDean Posted September 1 Share Posted September 1 (edited) 13 minutes ago, Gary from OPA said: So am I correct in that it designed to plugin on this connector I highlighted in green in the 99/22 board? At the top just to left of the back io port? I can't verify that, but it looks like a good possibility. would have to ask the designer Alessio Iodice. It does look like a 44 pin port. Edited September 1 by RickyDean spelling, added content 1 Quote Link to comment Share on other sites More sharing options...
Gary from OPA Posted September 1 Share Posted September 1 Just now, RickyDean said: I can't verify that, but it looks like a good possibility. would have to ask the designer Alessia Iodice Let me know what you find out. It's shaping up nicely. Looks like going to need to get one of these internal tipi boards now as well. More stuff to order and build. Ugh.. 2 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted September 1 Share Posted September 1 9 minutes ago, Gary from OPA said: Let me know what you find out. It's shaping up nicely. Looks like going to need to get one of these internal tipi boards now as well. More stuff to order and build. Ugh.. Can't find an email. Don't how to contact on Github. Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 1 Author Share Posted September 1 That header looks to be the I/O port. It seems to be the same as the edge connector to the right of the header. Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 1 Author Share Posted September 1 7 hours ago, RickyDean said: Can't find an email. Don't how to contact on Github. “If there are any questions, I can be reached at vic2020Dan@gmail.com” Quote Link to comment Share on other sites More sharing options...
RickyDean Posted September 1 Share Posted September 1 Stevee571,it was late, but I wasn't talking about Dan, I was talking about Alessio. But of course Dan would know. Thanks. 1 hour ago, stevee671 said: “If there are any questions, I can be reached at vic2020Dan@gmail.com” Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 1 Author Share Posted September 1 9 hours ago, RickyDean said: I can't verify that, but it looks like a good possibility. would have to ask the designer Alessio Iodice. It does look like a 44 pin port. 4 1 Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 1 Author Share Posted September 1 1 minute ago, RickyDean said: Stevee571,it was late, but I wasn't talking about Dan, I was talking about Alessio. But of course Dan would know. Thanks. All good. 1 Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 1 Author Share Posted September 1 (edited) Now with built-in speech! Edited September 1 by stevee671 4 3 Quote Link to comment Share on other sites More sharing options...
jbdigriz Posted September 3 Share Posted September 3 (edited) You know, I remember when Jeri Ellsworth came on the old TI OLUG on yahoo, or maybe it was still eGroups then. Don't recall exactly. She tried to drum up interest in a 4A version of the C-One but didn't seem to garner much interest in updating the /4A. That was FPGA-based, of course, but, my, how things have changed. It's exciting to see another updated console design, but honestly I'd hope not to see scarce TMS99xxx or other rare chips used for projects like this. Stick with the 9900, or better yet for performance use a 9995 and a fully 8-bit design. Or an FPGA, probably the best choice here. Yes, it's possible to do a console with /4A, Geneve, and possibly minicomputer support. That's why I'm happy to see Erik continuing with the Geneve2020, particularly the Nubus version, even if it's a more challenging proposition. Both hardware and software-wise, if you also plan on fully exploiting the performance and features of the 99xxx. I know Werner wants to use original components as much as possible, but there are reasons beyond performance to consider using an FPGA. PS. I know I have trouble tracking the AA forums, but today is the 1st time I've seen this thread. After I read the Ultimate 99 post the other day, I explicitly looked, and searched, for it, to no avail. Now here it is. Strange... Oh, well. Edited September 3 by jbdigriz Quote Link to comment Share on other sites More sharing options...
RickyDean Posted September 3 Share Posted September 3 (edited) 29 minutes ago, jbdigriz said: You know, I remember when Jeri Ellsworth came on the old TI OLUG on yahoo, or maybe it was still eGroups then. Don't recall exactly. She tried to drum up interest in a 4A version of the C-One but didn't seem to garner much interest in updating the /4A. That was FPGA-based, of course, but, my, how things have changed. It's exciting to see another updated console design, but honestly I'd hope not to see scarce TMS99xxx or other rare chips used for projects like this. Stick with the 9900, or better yet for performance use a 9995 and a fully 8-bit design. Or an FPGA, probably the best choice here. Yes, it's possible to do a console with /4A, Geneve, and possibly minicomputer support. That's why I'm happy to see Erik continuing with the Geneve2020, particularly the Nubus version, even if it's a more challenging proposition. Both hardware and software-wise, if you also plan on fully exploiting the performance and features of the 99xxx. I know Werner wants to use original components as much as possible, but there are reasons beyond performance to consider using an FPGA. PS. I know I have trouble tracking the AA forums, but today is the 1st time I've seen this thread. After I read the Ultimate 99 post the other day, I explicitly looked, and searched, for it, to no avail. Now here it is. Strange... Oh, well. Well they decided to keep this thread as the ti99/22 thread for the existing project that will not be enhanced, at least not by the group, this is a TI99/4A clone. The Utilmate99 thread was moved to here: to keep people from getting confused. Edited September 3 by RickyDean Quote Link to comment Share on other sites More sharing options...
jbdigriz Posted September 3 Share Posted September 3 Right, saw that yesterday, just couldn't find this here thread, for whatever reason. 1 Quote Link to comment Share on other sites More sharing options...
Artoj Posted September 4 Share Posted September 4 Well I'll be darned, it could fit in the same foot print as the 4A, albeit with a 3D printed case so it fits correctly on the inside. The outside could still look familiar, of you want, I didn't spend too much time on it, at least it gives me a reason to use SCAD again, regards Arto. 2 Quote Link to comment Share on other sites More sharing options...
Gary from OPA Posted September 4 Share Posted September 4 1 minute ago, Artoj said: Well I'll be darned, it could fit in the same foot print as the 4A, albeit with a 3D printed case so it fits correctly on the inside. The outside could still look familiar, of you want, I didn't spend too much time on it, at least it gives me a reason to use SCAD again, regards Arto. Yes, I was talking about this with @stevee671 by email earlier today when for some reason AtariAge was offline for a while. They I think the original designer Dan did it on purpose designed the mainboard to basically fit the size of the 4a footprint. All you need to do is raise the keyboard up so it hangs over the bottom left of the mainboard and squeeze in a power supply somewhere as well, or have it external and it could be possible to have a console case that at least fits the 4A footprint size, with the only major difference is the cartridge loading straight down instead of at angle with the keyboard in the middle instead of sitting all the way to left side. 2 Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 4 Author Share Posted September 4 (edited) All, if you committed to purchasing a 99/22 board set, check your email. Some of you have already responded, some have not. Edited September 4 by stevee671 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted September 4 Share Posted September 4 26 minutes ago, stevee671 said: All, if you committed to purchasing a 99/22 board set, check your email. Some of you have already responded, some have not. Saw it, wasn't sure what I was supposed to do with it, sent you a response. 1 Quote Link to comment Share on other sites More sharing options...
RickyDean Posted September 4 Share Posted September 4 (edited) On 9/1/2024 at 9:28 AM, stevee671 said: I would question why both couldn't be populated. As long as you only use one at a time, what would it hurt? Edited September 4 by RickyDean spelling 1 Quote Link to comment Share on other sites More sharing options...
Artoj Posted September 4 Share Posted September 4 16 minutes ago, RickyDean said: I would question why both couldn't be populated. As long as you only use one at a time, what would it hurt? I guess it would be like an extension of the main bus, you can use both for sure, I would guess one is for external plugins and the other for internal add-on cards. I am thinking an internal side bus, where you can add, USB, RS232 etc and have an external port hole, where the slot I drew behind the second port, if made larger, would be great to add a cover that would have different port holes. So many possibilities!! Quote Link to comment Share on other sites More sharing options...
Gary from OPA Posted September 4 Share Posted September 4 1 hour ago, Artoj said: I guess it would be like an extension of the main bus, you can use both for sure, I would guess one is for external plugins and the other for internal add-on cards. I am thinking an internal side bus, where you can add, USB, RS232 etc and have an external port hole, where the slot I drew behind the second port, if made larger, would be great to add a cover that would have different port holes. So many possibilities!! For cartridges it would be problem, unless the secondary port modded to only work at another grom base. Something I am going to look at. As for the IO ports. It depends on how the bus is driven by outside devives. For example in my dual PEB setup on a regular 4a it works as there is only one active 245 at a time driving the bus because of the RBENA line which turns on the firehose end. When using both IO ports you have to make sure only when the assigned devices are active does it enable their 245. So not two different devices are fighting for control of the bus. Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 4 Author Share Posted September 4 14 hours ago, Artoj said: Well I'll be darned, it could fit in the same foot print as the 4A, albeit with a 3D printed case so it fits correctly on the inside. The outside could still look familiar, of you want, I didn't spend too much time on it, at least it gives me a reason to use SCAD again, regards Arto. I for the board in to the bottoms section of the /4a case and it takes up every bit of it. Design a new case where the the horizontal cart slot is removed and brought up to the same angle as the rest of the case. Make the cartridge port vertical. Center the keyboard in the middle. Like this… 2 Quote Link to comment Share on other sites More sharing options...
+OLD CS1 Posted September 4 Share Posted September 4 34 minutes ago, stevee671 said: Going MSX up in here. Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 4 Author Share Posted September 4 4 minutes ago, OLD CS1 said: Going MSX up in here. Some of those MSX/MSX2 designs were pretty good looking. 1 1 Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 4 Author Share Posted September 4 18 hours ago, Artoj said: Well I'll be darned, it could fit in the same foot print as the 4A, albeit with a 3D printed case so it fits correctly on the inside. The outside could still look familiar, of you want, I didn't spend too much time on it, at least it gives me a reason to use SCAD again, regards Arto. It’s an almost perfect fit. 4 Quote Link to comment Share on other sites More sharing options...
stevee671 Posted September 8 Author Share Posted September 8 (edited) More work, waiting on 1k resistors and need some capacitors! Oh, I gotta get a power supply on order. Looks like one of the Meanwell power supplies outputs exactly what this board needs. Edited September 8 by stevee671 6 1 Quote Link to comment Share on other sites More sharing options...
nuxi Posted September 12 Share Posted September 12 On 9/4/2024 at 12:17 PM, Gary from OPA said: For cartridges it would be problem, unless the secondary port modded to only work at another grom base. Something I am going to look at. Simplified version of the widget mod should work: https://www.unige.ch/medecine/nouspikel/ti99/widget.htm Quote Link to comment Share on other sites More sharing options...
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