42bs Posted December 30, 2020 Share Posted December 30, 2020 Unrolling the loops brings the A0-clocked reading down to 5.3s! So about 10ms per page. 1 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4711801 Share on other sites More sharing options...
Nop90 Posted December 30, 2020 Author Share Posted December 30, 2020 2 hours ago, 42bs said: Reading page wise all 64K takes ~6.2s with A0 clock and 7.8s with A1 clock. Not bad at all! Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4711912 Share on other sites More sharing options...
+karri Posted December 30, 2020 Share Posted December 30, 2020 24 minutes ago, Nop90 said: Not bad at all! True. I assume that it makes sense to change the wires and use A0. 20% speedup is a BIG deal. My guess is that I may need around 8..16k for my game. So a 2 second load time is really great! Besides, I can always entertain the user while the eeprom is loading. In case you want to change the A1 to A0 you can just cut the trace from A1 to the eeprom and solder a wire from A0 instead. Here is the A0 routing: And the current A1 routing 2 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4711921 Share on other sites More sharing options...
42bs Posted December 31, 2020 Share Posted December 31, 2020 Great, it worked. New driver uploaded. I added also a busy check for the write bench: 6.8s for the whole 64k. 1 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4712367 Share on other sites More sharing options...
LX.NET Posted January 13, 2021 Share Posted January 13, 2021 Fantastic work, everyone. Really looking forward to putting this to use. In terms of creating physical cartridges to support the 24AA512, I have looked at the TsopCart in the atarilynx repo on Bitbukcket. The KiCAD file states that the part to use for the small PCB board is the SST39SF040-55-4I-NHE, which seems to be the one for Karri's first full sized PCB (like in the images above). Shouldn't this be the SST39SF040-70-4C-WHE-T for the small PCB? Is the design still correct, with the new insights on the routing of A0 and A1? Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724092 Share on other sites More sharing options...
Nop90 Posted January 13, 2021 Author Share Posted January 13, 2021 That pcb board uses A1, I don't think the A0 revision is already available. The difference in the driver is a single instruction (two STZ RCART0 to change the clock signal on the A1 line instead of 1 for the A0), so with a little modify in the code both the two version can be used. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724111 Share on other sites More sharing options...
+karri Posted January 13, 2021 Share Posted January 13, 2021 I am planning to update the PCB real soon to have some new things: - use A1 for 93c46 chip to be compatible with old games - use A0 for 24AA512 chip for more speed - route GND, A0, AUDIN, 5V to the top edge of the card to allow for easy addition of all kind of serial chips - add a solder option for creating 2 chip logical setups (like Alpine Games, 42BS early software, perhaps others) I also plan to order a number of these new boards with 24AA512 on board. The plan is to have hard gold fingers instead of submerged gold. And to use a black pcb for prettier design. Currently I have no clue of the demand for these. Perhaps a 500 pieces order would be sufficient. 1 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724133 Share on other sites More sharing options...
+karri Posted January 13, 2021 Share Posted January 13, 2021 1 hour ago, LX.NET said: Fantastic work, everyone. Really looking forward to putting this to use. In terms of creating physical cartridges to support the 24AA512, I have looked at the TsopCart in the atarilynx repo on Bitbukcket. The KiCAD file states that the part to use for the small PCB board is the SST39SF040-55-4I-NHE, which seems to be the one for Karri's first full sized PCB (like in the images above). Shouldn't this be the SST39SF040-70-4C-WHE-T for the small PCB? Is the design still correct, with the new insights on the routing of A0 and A1? You are correct. The chips is SST39SF040-70-4C-WHE. The current KiCad model has the AG selector switch the wrong way. I need to change this. (I did this hack for a friend...) PS. I just updated the design. The AO is now used for the 64k eeprom. I still have not added extra solder pads for the I2C pins. But the AG switch is now in "normal" position. Meaning 512k ROM. And not 2x256k. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724136 Share on other sites More sharing options...
LX.NET Posted January 13, 2021 Share Posted January 13, 2021 Which software are you using for designing and viewing the PCB? When I look at it now using https://www.altium.com/viewer I do not see the pads for the chips and the Lynx cartridge anymore. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724171 Share on other sites More sharing options...
MichelS Posted January 13, 2021 Share Posted January 13, 2021 ... and KiCad 5.1.9_1 (latest stable) doesn't open the files at all... Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724223 Share on other sites More sharing options...
+karri Posted January 13, 2021 Share Posted January 13, 2021 Actually I needed the balanced traces for another project so I changed to the KiCad-nightly. Sorry about that. The stable version lacked the best tools in KiCad. The name of the files has also keycad_sch instead of just .sch. But the old version does not know about these naming changes. By just re-naming the files and remove the kicad_ part they should work in the stable release. This design does not need any fancy stuff. Anyway, here is the design. Now everything is implemented and I added a 4-pin header for cool extensions. The data on the header is GND, A0, AUDIN, 5V. For AG you need to cut the trace between pins 1-2 and solder a blob between pins 2-3. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724228 Share on other sites More sharing options...
Nop90 Posted January 13, 2021 Author Share Posted January 13, 2021 This requires a new shell design too. The dent on the cart is missing the the the 4-pin header requires some space for cables to go out of the back of the cart. Note: the label on the cart says 24AA256, why not 24AA512? Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724237 Share on other sites More sharing options...
+karri Posted January 13, 2021 Share Posted January 13, 2021 8 minutes ago, Nop90 said: This requires a new shell design too. The dent on the cart is missing the the the 4-pin header requires some space for cables to go out of the back of the cart. Note: the label on the cart says 24AA256, why not 24AA512? I just changed it to 24AA512. The dent is in the same place as before. I just forgot to plot it correctly. It is there in yellow. If you don't use the 4-pin stuff the cart shell is the same. No chips have moved. If you want some acceleration device or LED strip you need to create a daughter board anyway. I would probably just solder a flat cable between the boards and not use connectors. PS. I will still go through all the library settings and add the components to the local library of the board. That is why the pads are missing. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4724247 Share on other sites More sharing options...
+5-11under Posted January 14, 2021 Share Posted January 14, 2021 On 1/13/2021 at 9:34 AM, karri said: Anyway, here is the design. For AG you need to cut the trace between pins 1-2 and solder a blob between pins 2-3. Hi Karri, me being a newbie on the Lynx, you've lost me... could you explain what the "AG" item in the layout is for?... is this defaulting to the 24AA512 chip (left side shorted), and if you instead short the "right side" (and cutting the left side), then you're selecting the 93C46 chip? Also, it sounds like the 24AA512 is a new addition, so... for the 93C46, are there any demos/games available, for testing? Do any of the classic games use this chip? Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4725209 Share on other sites More sharing options...
sage Posted January 14, 2021 Share Posted January 14, 2021 AG means, if you cut the wire, you can make yourself a copy of Alpine Games. ? 1 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4725213 Share on other sites More sharing options...
+5-11under Posted January 14, 2021 Share Posted January 14, 2021 3 hours ago, sage said: AG means, if you cut the wire, you can make yourself a copy of Alpine Games. ? Okay, thanks! So, I guess it's normally leave the jumper the way it is, and populate the EEPROM that you want/need (if one is required). I'm still interested in finding if there's any games that can be tested, that use the 93C46. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4725387 Share on other sites More sharing options...
42bs Posted January 14, 2021 Share Posted January 14, 2021 BLL contains test routines for both the 93c46 and the new 64K EEPROM. 1 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4725465 Share on other sites More sharing options...
Nop90 Posted January 14, 2021 Author Share Posted January 14, 2021 1 hour ago, 5-11under said: I'm still interested in finding if there's any games that can be tested, that use the 93C46. No classic game lynx uses the eeprom, but some of the homebrews released in the last year do. For example almost all the games released by me, like Lawnmower, 4ttude, Nutmeg, Xump, Xump2. 1 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4725479 Share on other sites More sharing options...
+5-11under Posted January 14, 2021 Share Posted January 14, 2021 42 minutes ago, Nop90 said: No classic game lynx uses the eeprom, but some of the homebrews released in the last year do. For example almost all the games released by me, like Lawnmower, 4ttude, Nutmeg, Xump, Xump2. Awesome, thanks! That will be helpful when I've got my boards. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4725512 Share on other sites More sharing options...
Nop90 Posted January 24, 2021 Author Share Posted January 24, 2021 (edited) On 1/14/2021 at 4:31 PM, sage said: AG means, if you cut the wire, you can make yourself a copy of Alpine Games. Interesting, If I understand the pcb layout, alpine games uses Audin to select the second block instead of the higher address bit. Is this behaviour supported by emulators? And by LynxGD? LynxGD states to support every officialand HB game,but without a flagh in the header to to handle this configuration, don't know how it could run AG. EDIt: ok, I found the byte in the LNX header that says to use this addressing. Edited January 24, 2021 by Nop90 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4734425 Share on other sites More sharing options...
sage Posted January 25, 2021 Share Posted January 25, 2021 15 hours ago, Nop90 said: Is this behaviour supported by emulators? AG will not run in emulators. But there are other (tech demo) ROMs which make use of it (e.g. dragnet). They work if the emulator has a new core which supports it. Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4735021 Share on other sites More sharing options...
Nop90 Posted January 25, 2021 Author Share Posted January 25, 2021 (edited) 4 hours ago, sage said: AG will not run in emulators. Why? unsupported features in the emulators or copy protections in the rom? EDIT: don't worry, found the answer. Edited January 25, 2021 by Nop90 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4735056 Share on other sites More sharing options...
Nop90 Posted January 27, 2021 Author Share Posted January 27, 2021 (edited) On 12/31/2020 at 7:33 AM, 42bs said: Great, it worked. New driver uploaded. I added also a busy check for the write bench: 6.8s for the whole 64k. Whre did you upload it. I want to optimze the code and want to work on the latest version. karri's bitbucket site has the old version. I'm worried that different version spread on the net. Edited January 27, 2021 by Nop90 Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4737045 Share on other sites More sharing options...
42bs Posted January 27, 2021 Share Posted January 27, 2021 13 minutes ago, Nop90 said: Whre did you upload it. I want to optimze the code and want to work on the latest version. karri's bitbucket site has the old version. I'm worried that different version spread on the net. new_bll Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4737049 Share on other sites More sharing options...
LX.NET Posted January 27, 2021 Share Posted January 27, 2021 Who is the owner of newcc65? It would be good to also have that in a public place (as stated in the dev-containers thread as well). Is that yours, @42bs and would you be willing to host it in your GitHub repo? Quote Link to comment https://forums.atariage.com/topic/313609-driver-for-24aaxxx-eepprom-mounted-on-karris-carts/page/6/#findComment-4737053 Share on other sites More sharing options...
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