[sdiy] looking for old DIY articles with RAM projects

[Scott Nordlund]

Most simple digital delays (based on plain logic ICs rather than a CPU and/or DSP) probably use DRAM, which has a more complicated interface than SRAM (the address lines are multiplexed into columns and rows, the RAM needs to be refreshed, etc.).  Probably it would be best to read an introductory digital electronics text to get the basics of flip flops, memory, state machines, then some old school computer architecture type stuff to see how latches and 3-state buffers are used for bus control, interfacing with peripherals, etc.

----------------------------------------
> From: subjectivity at hotmail.com
> To: synth-diy at dropmix.xs4all.nl
> Date: Mon, 22 Jun 2009 17:33:22 +0000
> Subject: [sdiy] looking for old DIY articles with RAM projects
>
>
> hey there
>
>
> It seems looking at commercial digital delay schematics has been a dead
> end as they are SO complex. So maybe starting small and learning what
> does what would help.
>
> SO
> someone told me about an old Polyphony article that had a digital delay schematic. And someone else just told me
> there was an article with a 128 (?) step sequencer that used RAM.
>
> I am trying to find these (and any other articles or scheamtics) that might be simple starting points on learning to use
> RAM, latches, etc.
>
> I would assume at some point that Popular Electronics might have had some articles or how-to's on this stuff as well.
>
> maybe Elektor too?
>
>
> If anybody has any info or links or scans, I woud really appreciate it.
>
>
> many of these can be found on ebay but they rarely include what is IN the magazine.
>
>
> thanks
>
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