 | | Re: How much memory finally?
|
|
(...) I believe it has a 16K ROM and 32K SRAM. Within the 32K, 16K is occupied by the 'firmware' downloaded to the RCX. About 6K is reserved for bytecode program space and the datalog. Presumably the rest is working memory for the firmware (stack, (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
| |
| | Re: How much memory finally?
|
|
Thank for the answer, Dave, this is the kind of info I'm looking for. BUT! I don't think it is correct: 0x8000 is 32k: the firmware would start at the end of memory!?! 0xbfff is 48k: unless the 16k of the rom are counted of course... Then this mean (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
| |
| | Re: How much memory finally? ADDENDUM
|
|
Well, I checked with Kekoa's memory map, and indeed, thinks are not as simple. And Dave was right (Why did I doubt is sacred words?) Memory is divided into three main area of 16k. The first is ROM, containing the base programs. The two other (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
| |
| | RE: How much memory finally? ADDENDUM
|
|
(...) There is no user memory from 0x4000 to 0x8000 - It's all ROM space but it might not be used. I look at things in terms of replacement firmware, and the RCX is very flexible in this regard. The RAM for replacement firmware starts at 0x8000. (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
| |
| | Re: How much memory finally? ADDENDUM
|
|
I haven't seen anyone talk about hacking a memory expansion (hardware) yet. Dennis (...) -- Dennis Williamson - Certified Y2K Complacent Bad News: The next millenium starts on a Monday. Good News: You get the day off. (remove .NO and SPAM. to reply) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
| |
| | Re: How much memory finally? ADDENDUM
|
|
I have seen some systems that have RAM set up this way: The first area is for the system, the second area is user programs and is allocated from the bottom up. The third area is user (and system) data, allocated from the top down. They "meet in the (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
| |
| | Re: How much memory finally? ADDENDUM
|
|
Hey, that's a pretty nice idea! Any volunteer? D. (...) (25 years ago, 10-Feb-00, to lugnet.robotics.rcx)
|
