Not the way you are thinking.
There are only two existing SIMMs with 16MB of wave memory. They are the Holy Grail and Protozoa SIMMS. I expect that once I read the content of the preset memory I will be able to determine how to combine these two into a single 32MB image having presets from both SIMMs. However, in doing that some of the information in preset memory may not fit into the space available. [that is each SIMM can use a 4MB space for preset information, but it doesn't have to use all of it, and so these two SIMMs may or may not have enough space to accommodate each other]. Won't know until we have a look.�
But if there were a whole lot of 16MB SIMMs that you wanted to emulate, then it would be possible to combine them into 32MB images, but the issue with the presets remains. You can only get 4MB of presets and combining them may come at the expense of the some of the information - that is you may have to ditch some songs or arps to make them fit. Would be dependant on what E-mu put into the preset information. But clearly you can have up to 8 banks of presets, some arps, some songs but the combination of those has to fit into the 4MB preset memory.
So yes you can have eight 16MB images (if there were so many available), but you only get one preset memory allocation per "SIMM" so what you get is up to what you can fit into it (and the SIMM wave memory need to be combined somehow).
This restriction is not mine. E-mu never produced a SIMM with more than 4MB of preset memory so I suspect there is a limit there somewhere. It is possible that the OS supports 128MB of preset memory as well as 128MB of wave form memory (there are electronic signals for that much) and that other things can be done with that memory. However, the preset memory is loaded into DRAM at startup so that there isn't interference between wave forms and presets during operation. The maximum RAM a P2K module can support is 16MB, and the command stations only have 8MB on board anyway (to the best of my memory - will have to look inside one of my command stations to check for sure). Bottom line is, without changing the OS (or coming up with a hardware expansion for the P2K module to increase available RAM or something) there will be some limitations on just how much preset memory is actually usable by the module.
From: "Bruno brunorc@... [xl7]"
To: xl7
Sent: Saturday, 23 May 2015, 22:51
Subject: Re: [xl7] FLASH SIMM purchase options
To: xl7
Sent: Saturday, 23 May 2015, 22:51
Subject: Re: [xl7] FLASH SIMM purchase options
�
Hi all,
it's a question for Jack, but I believe other users could benefit from the answer as well.2015-05-03 7:35 GMT+02:00 Jack Pratt woodsworth1@... [xl7] <xl7@yahoogroups.com>:
b. Two flash chip devicecost: $US170 (approx)availability: soonish (weeks I hope)functionality: emulates up to 4 ROM slots simulataneously (so the P2k/command station thinks there are four ROM sIMMs there when there is only the single FLASH SIMM installed). I can preprogram it with whatever ROMs you want. But there is enough room in the device for 7 32MB images even though only 4 of them can be used at once (need to reset the system to make a change) Some jumpers will allow you to specify which slots are active so that you can put your own ROMs in that/those slots if you want, and which images are in each slot at the time.�limitations: it has 256MB of storage but it can only emulate four 32MB SIMMs �at once from the 7 images in the memory allowing for the 4MB preset memory for each "ROM". It will require a special board to reprogram it which you will need to purchase separately for about $US50 [probably less].
If I wanted to have two 16MB SIMM images there (I'm thinking of HolyGrail & Protozoa), would that mean being able to fit 8 images in the memory?
Thanks,
Bruno
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