I appologize in advance for the mispellings... I'm typing this a mile a minute.

how did all of you learn this ????? I have a BS in computer Systems Engineering and it's part of the standard courseload to study digital electronics, which will explain logic gates, registers, memory, addressing.. the whole nine yards. A basic book in digital electronics is exactly what you need...

I am having a hard time understanding how memory locations and how registers work, Registers: Think of a register as a piece of memory. In the simplest form, a register has 2 inputs (data and clock) and one output (output data). When the clock rises (goes from a logical '0' to a logical '1') whatever value exists on the data input will be stored in the register and driven out of the outout data pin. The value on the input data pin can now do whatever it wants (go high, low, whatever) but the value on the output data pin will not change until he next rising clock edge.

Memory Addressing: Memory addresing works the same way regular addressing does. In other words, when you want to send a letter to 7 Cypres Drive, Whosville AL, it gets sent there. If the CPU wants to send a byte of data to a certain location in memory, it needs to specify not just the data, but where to stick the data. Lets say a small piece of memory has 16 locations in it and each one of these location can hold a byte(8 bits) worth of data, the address location would be 0,1,2 ...... 9,A,B,C,D,E,F. And if the CPU wanted to write a byte of data to location 8 in memory, it puts the data on the data bus, the address (8) on the address bus and in the next clock cycle (typicaly) the data is written to memory. Conversely, if the CPU wants to read a byte from memory, it puts the address (8) on the address bus, drives a signal accordingly to tell the memory this is a read operation, and in the same clock cycle (typically) the memory puts the data it has in the location number 8 on the data bus.

is their a book or courses that anyone can suggest , My textbook from college was 'Contemporary Logic Design' by Randy Katz. I love it, but that's my opinion.

I took a digital course at the local collage ,they just touched on this part not enough to really understand and they did not go over memory You're kidding... wow. Memory and registers are basic building blocks of digital design.

Good luck.. digital electronics is a blast once you get the hang of it. -Adam

From: "hitech" <tony@htbsusa.com> Reply-To: techtoolslist@www.flippers.com To: <techtoolslist@www.flippers.com> Subject: [techtoolslist] Understanding memory locations Date: Tue, 16 Sep 2003 11:02:30 -0700

I am having a hard time understanding how memory locations and how registers work,, is their a book or courses that anyone can suggest , no one teaches this any more, I took a digital course at the local collage ,they just touched on this part not enough to really understand and they did not go over memory I want to be able to use my fluke 9010 to trouble shoot these arcade boards,, but when it gives loop info how to trace this back to a chip ,, any help would be great , how did all of you learn this ?????

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