14 June 2017, 14:21 | #41 | |
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There is nothing to use with these yet But I hope soon there will be! And about RAM, I guess if you put a full 68020 in there, Fast RAM capacity might get larger (and I am hoping compatibility would be the same with an EC020?). |
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14 June 2017, 16:50 | #42 |
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Well, the FMV module should work, and possibly the sx32 might partially work, but yes, I would love to see new expansions for the cd32 as well!
I got the info about the RAM limits here: http://amiga.resource.cx/mod/cd32.html You can run a lot with 10mb of RAM, but Workbench could be a little better with some more. I've run ClassicWB 3.1 and default 3.9 on the cd32, and both are very usable at 16 colors. However, it often feel likes 10mb is right on the edge. |
15 October 2017, 21:13 | #43 | |
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So just chopped of the female PS2 connector connected to the serial pins and connected a DB9 TTL<->RS232 converter there. Unfortunately, I have no idea if I was just lucky with my purchase, or if this is a the most common PS/2 Y-adapter/splitter pinout. Attaching an image of how it looks like this when connected to a null modem cable and an A2000 keyboard. |
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17 October 2017, 16:52 | #44 |
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Did you have to invert the TTL serial lines for the RS232 converter, or are you passing them through as-is?
I want to make a SLIP wifi adapter for the CD32, or at least interface it to an existing one. |
19 October 2017, 10:11 | #45 | |
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Works in 115200 in NComm with 8n1.device btw, but I wouldn’t count on it if the system is loaded with other things at the same time. |
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19 October 2017, 20:25 | #46 |
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That's interesting - I've read in several places about the TTL inversion. I'll have to get out my arduino and start probing...
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19 October 2017, 21:42 | #47 |
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I guess it’s a case of someone saying something they thought was correct, without verifying it, which unfortunately happened to be spread further and became “the truth”.
The CD32 Debug Board Schematics should be a good source for example, it passes /RXD and /TXD directly to a MAX241. Also, I am quite sure there is no chance it would work at 115200 if the signal was inversed compared to what it should be. |
19 October 2017, 23:10 | #48 |
Banana
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Could it be the rs232 converter is triggering on the rising edge at the end of the bit, effectively performing the inversion by default? If you're only counting rising edges then both logics are equivalent.
The schematics do show it as being inverted on the connector. |
19 October 2017, 23:57 | #49 |
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Yes, all the RS232-converters I have seen are shown as inverters in their internal schematics - just check the data sheet for say the classic MAX232. It is probably no coincidence that /RXD and /TXD are active low on Paula already.
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