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 | | HB Memory map
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| This probably sounds like a pretty lame question but I am trying to make use of the unused areas in the lower 32K of the memory map of the HB but I can't seem to find the memory map in the documentation that I have available (the HB pdf manual, IC (...) (24 years ago, 12-Jun-00, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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| | How to make shared memory....not
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| (...) You ask for it, you get it. BUT: It works, sort of. It will not survive any multitasking problems. Shared memory has to be handled by the OS, not by a user program. I split your problem to 3 programs. Program 1 allocates the memory and prints (...) (23 years ago, 22-Dec-01, to lugnet.robotics.rcx.legos)
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memory
(score: 1.129)
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| | Re: mindstorms NXT and memory
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| (...) It depends where your ambitions lie. If you want to analyse audio or video or map your environment somehow - then 64Kb is pathetically small. If all you want is something that's just a small step ahead of an RCX then it's plenty. Of course you (...) (19 years ago, 8-Jan-06, to lugnet.robotics)
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memory
(score: 1.129)
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| | Re: mindstorms NXT and memory
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| (...) It depends on the application obviously...but thinking of consumer devices that cost around the same ballpark as the NXT and which are likely to be sold in similar quantities, we have PDA's, handheld games, MP3 players and digital cameras. * (...) (19 years ago, 9-Jan-06, to lugnet.robotics)
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memory
(score: 1.129)
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| | Re: legOS ... really a stack question
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| (...) Looking at my memory map, it appears that there is space for the stack in on-chip memory between fdc0 and ff7e (or thereabouts). That's just about 450 bytes. If you need more stack space than that, you'll need to move the stack to off-chip (...) (26 years ago, 2-Jan-99, to lugnet.robotics)
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memory
(score: 1.129)
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| | Re: free memory
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| (...) Hi, I've just been working on the p-code interpreter. I've been working with the Version 2.861, not the HandyBoard version. But I did a "diff" and there doesn't seem to be much difference. At any rate, here's the map I made for Version 2.861: (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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| | Extending the HB memory... I know, I know...
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| I couldn't sleep so I thought I would make some use of my insomnia. Several people have asked if the HB's memory can be extended, and usually the answer is no, not if you want to run IC. I have been taking a break from my navigation systems, and (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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memory
(score: 1.129)
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| | Re: How much memory finally? ADDENDUM
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| 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)
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memory
(score: 1.129)
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| | RE: Memory
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| I posted this link to a book on sensors and effectors for robots. This book, which you can download for free, contains nearly 300 pages with *great* illustrations. It's a pretty weighty tome, though (comes in at over 13.5MB, but is in PDF (Adobe (...) (26 years ago, 8-Feb-99, to lugnet.robotics)
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memory
(score: 1.129)
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| | Re: HB Memory map
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| Device Location Notes ===...=== 6811 internal $0000-$00ff Built-in RAM (A1 chip) $0000-$01ff (E1 chip) ---...--- 6811 control $1000-$103f Built-in registers ---...--- Expansion I/O $4000-$4fff Memory reads in this range enable the Y1 latch selector, (...) (24 years ago, 14-Jun-00, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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| | Re: Troubles with dallas memory 2.
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| One of the more common problems with the somewhat larger packages that the Dallas memories come in is pin bending. Remove the memory and look carefully to see if one of the pins has been bent out of shape. If you have one Hboard where it works and (...) (27 years ago, 3-Apr-98, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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| | Re: RCX 2.0 -- ideas. Keeping memory alive.
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| I was wondering if it would be possible to hook a 1 farad capacitor to one of the input ports to keep memory alive while changing batteries. You wouldn't need 9 volts, since the input ports are connected to the system bus at 5v. It could be attached (...) (26 years ago, 5-Jan-99, to lugnet.robotics)
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memory
(score: 1.129)
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| | In memory of NYC
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| I would like to pick up on Eric's suggestion that we do something in memory of the tragic events that took place in New York. There were suggestions of doing a play group for kids, but I think that might get very complicated. My suggestion is to (...) (23 years ago, 18-Sep-01, to lugnet.org.us.nelug)
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memory
(score: 1.129)
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| | Re: Memory Map for the RCX
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| (...) Here's a brief summary: 0000-3FFF On-chip ROM 4000-7FFF Unused 8000-EFFF External RAM F000-FB7F External RAM, motor control register (write) FB80-FD7F Reserved FD80-FEFF On-chip RAM FF00-FF7F On-chip RAM (can use 8-bit addressing modes) (...) (21 years ago, 11-Nov-03, to lugnet.robotics)
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memory
(score: 1.129)
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| | Re: Memory - Where did it go?
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| (...) With a newly loaded firmware: C:\WINAPPS\projects\...c>nexttool /COM=x -freemem 70324 C:\WINAPPS\projects\...c>nexttool /COM=x -listfiles NVConfig.sys=1 RPGReader.sys=14346 Demo.rxe=9436 Try-Touch.rtm=3788 Try-Light.rtm=4456 Try-Sound.rtm=6864 (...) (18 years ago, 10-Jul-06, to lugnet.robotics)
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memory
(score: 1.129)
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| | Re: Perl rules!
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| (...) And why did IBM stick all the ROM and system stuff in high memory (>640K), rather than low memory? If they had done that, it would have been (more) possible to extend the address space without totally losing backwards compatibility. Or if (...) (25 years ago, 20-Jul-99, to lugnet.off-topic.geek)
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memory
(score: 1.129)
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| | Re: Debugging the memory circuit
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| Thanks Fred, Yes, we have several working ones that download and boot just fine. In fact we're going ahead with these, but it means we don't have 1 bot per student. Since the download appears to work, and just the boot does not, I'm stumped. It's (...) (25 years ago, 15-Sep-99, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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| | Re: A bug?
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| (...) <SNIP> The problem is, that MLCad does never access a file during drawing ... First MLCad loads all the parts into memory and starts drawing directly from the memory. This means you never will be able to change a part without refreshing the (...) (24 years ago, 22-Aug-00, to lugnet.cad.mlcad)
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memory
(score: 1.129)
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| | memory fault
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| I was working with IR detectors this morning when this happened.... one detector was connected to the special detector port provided in the handy board. There was a second one connected to the first digital port. They were working fine and i was (...) (28 years ago, 6-Dec-96, to lugnet.robotics.handyboard)
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memory
(score: 1.129)
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