questions about SIMM modules — ZXNet «hardware.zx»

From Alexander Yudin To All 12 November 2006

Hello, AKIL AKI> here they are 8 Sims, those made on Siemens, have 1 Megabyte. All others are 256 Kilobytes. And the AAA2801 micros should have 18 pins instead of 10!

From Alexander Sakhoshko To All 13 November 2006

Hello Costa Cos> 8 sims, those made on Siemens, have 1 Megabyte. This makes me happy :v2_biggr; ...; Cos> All others are 256 Kilobytes. Also an option: v2_rolley... Cos> And the AAA2801 micros should have 18 pins rather than 10! Well, I was wrong :)...

From Mark Antonov To All 13 November 2006

Hello, AKIL AKI> SIM cards have 30 pins (I wouldn’t post here if there were 72) Well, why, I just have a 72-pin one. and information on all m-schemes can be easily found by their markings

From Vasya Popov To All 14 November 2006

Hello, The Exploited Can anyone give me a link on how to connect these SIM cards?

From Kamil Karimov To All 14 November 2006

Hello John North Joh> can anyone give me a link on how to connect these SIM cards? Read it, I hope you'll understand. File: SIMM_1M.ZIP http://zx.pk.ru/attachment.php?attachmentid=4097

From Mikhail Andreev To All 14 November 2006

Hello, The Exploited The> well, why, I just have a 72-pin one. The> and information on all m-schemes is perfectly searchable by their markings let me see in PM how you connected 72 pins.... :v2_wink2:

From Mark Antonov To All 14 November 2006

Hello, Mikka_A Mik> let me see in PM how you connected 72 pins.... Yes, everything is just there, I have a profik, there is a 16-bit bus, and the sim has a 32-bit - it’s parallelized SD and cas in pairs (ras if I’m not mistaken are common, /we is common) and for each 8-bit register as in the 30-pin connection diagram. those. essentially 4mb sim is 4 megabytes with some signals combined

From Mikhail Andreev To All 15 November 2006

Hello, The Exploited The> yes, everything is simple there, I have a professional, there is a 16-bit bus, and the sim has 32-bit - The> paralleled the SD and cas in pairs (ras, if I'm not mistaken, are common, /we - The> general) and for every 8-bit register as in the connection diagram The> 30pin. those. in fact, 4 MB SIM is 4 megabytes combined The> by some signals hehe... all that's left is to look at Profik's diagram, or look at 30-pin connection diagram.....:v2_wink2; :v2_tong:; I just haven't seen these diagrams. and is this applicable to Scorpio... :v2_blink:

From Mark Antonov To All 16 November 2006

Hello, Mikka_A Mik> I just haven’t seen these diagrams. Mik> and does this apply to Scorpio... damn, well, I don’t know how to help a person who can’t (doesn’t want) to watch even those schemes

From Vasya Popov To All 16 November 2006

Hello caro car> Read, I hope you'll understand. thank you! maybe there are connection diagrams for other specs (not only Leningrad and "Pentagon")? otherwise there is not enough information. thanks in advance!

From Mikhail Andreev To All 16 November 2006

Hello, The Exploited The> damn, I don’t know how to help a person who can’t (doesn’t want) The> see even those diagrams If this is a pebble in my garden ;) - then I saw the Profi diagram, but I didn’t find the diagram SIM card connections. Specifically to the pros. in general terms - I saw it. I just thought that you have it in some form (paper or electronic) and you could share.... :rolleyes; So; what - we'll share - otherwise LVD is inclining me towards making Rushnykhs Buterov :v2_biggr; on; my scorpio, and to be honest, I’m still more inclined to SIMM installation. :v2_wink2:

From Mikhail Andreev To All 16 November 2006

Hello John North Joh> thank you! Joh> maybe there are connection diagrams for other specs (not only for Joh> "Leningrad" and "Pentagon") ? Joh> otherwise there is not enough information. Joh> thanks in advance! here you go. both to me and to me! to Scorpio. and then some people here, let’s not point fingers, they say all sorts of things.... :v2_tong2; :v2_tong2:; :v2_tong2:

From Victor Chuprov To All 15 December 2006

Hello John North I got Simm 30 pin, two strips have 3 chips, 20 pins each, marked ZMR4240BDJ there is also one strip with three microcircuits, two of which are 814400A-70, the third BP41C1000D-6 also has 20 pins each chip. I need 1 megabyte... is there such a limit among them?

From Victor Chuprov To All 15 December 2006

Hello, Mikka_A Thank you for your answer! :)

From Mikhail Andreev To All 15 December 2006

Hello Vitron Vit> I got Simm 30 pin, Vit> two strips have 3 microcircuits, 20 pins each with markings Vit> ZMR4240BDJ Vit> Vit> there is also one strip with three microcircuits, two of which are 814400A-70, Vit> the third BP41C1000D-6 also has 20 pins each chip. Vit> Vit> I need 1 megabyte... is there such a level among them? Vit> Vit> ...for 1024sl 2.2... 814400A-70 is a 4-bit meter. 2 mikruhi - 8 bit meter. this is what you need. although according to the experiment - those two are also one meter each. but this is a guaranteed meter.

From Ivan Shishkin To All 20 January 2007

Hello Mike Mik> There are, but they are very rare, much more than 256Kb and 1Mb. I have Mik> is in the 512Kb collection. In general, I vouch for its existence: 256Kb, Mik> 512Kb, 1Mb, 4Mb,16Mb. And another 99% that there are 8Mb, I just don’t Mik> saw. Mik> Mik> Of the 72 pins, I vouch for 4Mb, 8Mb, 16Mb, 32Mb, 64Mb, 128Mb. And here's proof: http://migera.ru/hard/manual/DRAM_info.html File: simm512kbyte.rar http://zx.pk.ru/attachment.php?attachmentid=4461

From Ivan Shishkin To All 22 January 2007

Hello, Micah_A NEC 424800-70RL т.е. SIMM 512k

From Mikhail Andreev To All 22 January 2007

Hello, Ivan > And here's confirmation: > > http://migera.ru/hard/manual/DRAM_info.html You can’t see in the photo what kind of chip it is....