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rjd324 · 14 September 2021, 09:33

So for the rj1307 (2mb agnus) [https://www.amibay.com/showthread.ph...00-Amiga-CDTV] I used the following memory: HM514260AJ8 (262, 144-Word x 16-Bit Dynamic Random Access Memory)

And I bought cheap 74f00 and 74F139 from ebay. China/HK.

This is for my rev 6. Other than the difference in memory the components are all in place.

I have soldered the module in place and in the correct orientation. When I boot, I see only 0.5 chip.

I made sure jp2 was bridged across the top and the trace is cut from bottom to mid. Jp7a also has had bottom two trace cut.

I guess it is either

. The memory is not compatible or not working
. The Chinese chips are all lies
. Bad soldering

I doubt it's the mem because I bought that here from a seller. It was originally intended for back up a1200 2b memory but I assumed it would work.

Regards.

14 September 2021, 09:33	#1
rjd324 Registered User Join Date: May 2020 Location: NE / UK Posts: 227	Super agnus adapter fur a500 rev 6 So for the rj1307 (2mb agnus) [https://www.amibay.com/showthread.ph...00-Amiga-CDTV] I used the following memory: HM514260AJ8 (262, 144-Word x 16-Bit Dynamic Random Access Memory) And I bought cheap 74f00 and 74F139 from ebay. China/HK. This is for my rev 6. Other than the difference in memory the components are all in place. I have soldered the module in place and in the correct orientation. When I boot, I see only 0.5 chip. I made sure jp2 was bridged across the top and the trace is cut from bottom to mid. Jp7a also has had bottom two trace cut. I guess it is either . The memory is not compatible or not working . The Chinese chips are all lies . Bad soldering I doubt it's the mem because I bought that here from a seller. It was originally intended for back up a1200 2b memory but I assumed it would work. Regards.