Timeline for dual-port parallel-to-serial SRAM?
Current License: CC BY-SA 4.0
17 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Mar 14, 2020 at 9:39 | comment | added | Bruce Abbott | "I want 4MB ideally" - Why? | |
| Mar 14, 2020 at 0:55 | answer | added | alex.forencich | timeline score: 2 | |
| Mar 13, 2020 at 13:52 | comment | added | jonathanjo | Are you just building one? Wondering if you need through-hole or will make a surface mount PCB? | |
| Mar 13, 2020 at 13:40 | comment | added | SoniEx2 | seriously considering the "DRAM + FPGA" option tbh. | |
| Mar 13, 2020 at 13:38 | comment | added | TonyM | Welcome to the site. Please appreciate that it's not a free design house. People will help you take the next step if your question shows you've done as much as you possibly could on your own - which yours doesn't, I'm afraid. Please edit your question and greatly improve it. Show your work and findings so far in considerable detail with any schematic. The schematic tool here is easy to use. The better the quality of question, the better the quality of the answers you will attract. Again, a warm welcome. | |
| Mar 13, 2020 at 13:35 | comment | added | SoniEx2 | depends, does "shared memory" count as "purely for communicating"? I want 4MB ideally. | |
| Mar 13, 2020 at 13:35 | comment | added | jonathanjo | If it's only small requirement, have you consider IDT7130? 1k x 8, parallel both sides, available in through-hole to match your 68000 idt.com/eu/en/document/dst/713040-datasheet | |
| Mar 13, 2020 at 13:25 | comment | added | jonathanjo | Is the SRAM purely for communicating between the 68000 and the ESP32? How much did you want? | |
| Mar 13, 2020 at 12:05 | review | Close votes | |||
| Mar 28, 2020 at 3:05 | |||||
| Mar 13, 2020 at 11:59 | comment | added | user16324 | Parallel to parallel dual port SRAM is easy to find (or used to be, when the 68000 wasn't quite so retro). To do what you're asking, the logical choice would be a small FPGA, then you get to write exactly what you are looking for. | |
| Mar 13, 2020 at 11:55 | comment | added | SoniEx2 | no, it really is a literal Motorola 68000. not a 680x0. this is more comparable to saying I have an 8086 than an x86. | |
| Mar 13, 2020 at 11:53 | comment | added | Marcus Müller | I don't know the electrical and logical structure of that; and I'd guess it'd be different for the 24 bit and 32 bit variants logically, and electrically totally depend on the individual chip. So, would it really be too much to tell us which chip or system we're talking about, in particular? You're literally asking the same as "I want to connect my x86 to my ARM for unspecified reasons", and I hope you understand why I think that's a bit too unspecific. | |
| Mar 13, 2020 at 11:48 | comment | added | SoniEx2 | @MarcusMüller the system basically exposes the 68k bus directly, for the most part. | |
| Mar 13, 2020 at 11:47 | history | edited | SoniEx2 | CC BY-SA 4.0 |
added 137 characters in body
|
| Mar 13, 2020 at 11:43 | comment | added | Marcus Müller | which 68000 system, in particular? You'd typically just use one of the communication ports that your microprocessor (or microcontroller) has. However, there are literally hundreds of different chips with an 68000 core, so it's impossible to tell what you need. Also, you'll need to tell us what data / for which purpose you're communicating; makes little sense else. | |
| Mar 13, 2020 at 11:35 | review | First posts | |||
| Mar 13, 2020 at 12:25 | |||||
| Mar 13, 2020 at 11:33 | history | asked | SoniEx2 | CC BY-SA 4.0 |