Comments on: Tama-Go Microcontroller

By: Jonathan Lamothe

Jonathan Lamothe — Fri, 01 Jul 2011 19:06:17 +0000

Okay final comment, I promise… ^^;

The mysterious missing 512B of RAM is probably the LCD RAM (which is conveniently 512B as the specs you posted mention).

By: Jonathan Lamothe

Jonathan Lamothe — Fri, 01 Jul 2011 15:20:59 +0000

What am I thinking? That’d be in ROM.

They might mirror it to RAM on boot for faster execution, but with that little memory available, it would seem pretty wasteful. Perhaps it’s an interrupt vector table?

(also, why can’t we edit comments?)

By: Jonathan Lamothe

Jonathan Lamothe — Fri, 01 Jul 2011 15:16:42 +0000

A bootloader would probably fit in 512B.

By: Jonathan Lamothe

Jonathan Lamothe — Fri, 01 Jul 2011 15:15:10 +0000

In that case 2K with a 512B block reserved would seem to make sense, but that’s a guess on my part (although, probably a reasonable one).

By: Natalie Silvanovich

Natalie Silvanovich — Wed, 29 Jun 2011 23:36:53 +0000

The sheet actually says “usable RAM”, so it might actually have a more even amount, but some is reserved or something.

By: Jonathan Lamothe

Jonathan Lamothe — Wed, 29 Jun 2011 21:55:20 +0000

I was going to say that 1536B of ram seems like a really bizarre number, but it’s exactly 6 256B blocks (or 3 512B blocks)… so I guess it’s reasonable.

By: karlw

karlw — Wed, 29 Jun 2011 17:40:41 +0000

Wow! Great job Natalie. That totally looks like a match.