Subject:
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Re: IR Tower
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 23 Dec 1998 18:41:20 GMT
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Original-From:
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dave madden <dhm@paradigmNOSPAM.webvision.com>
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Viewed:
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1577 times
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=>From: "John A. Tamplin" <jat@Traveller.COM>
=>...
=>Look at the Hitachi H8/3292 documentation -- it has all of that for you.
=>Briefly, ROM is 0x0000-3FFF, external address space is 0x8000-0xFB7F,
=>internal RAM is 0xFD80-0xFF7F, external address space is 0xFF80-0xFF87,
=>and the peripheral register field is 0xFF88-0xFFFF. All of the on-chip
=>peripherals are fully documented in the Hitachi documentation.
Doh! I keep thinking this is a regular CPU with all its RAM & ROM
external, and the locations at the whim of the board designer. Thanks
for the reality check.
On the plus side, my egcs cross compiler built legOS with the light
sensor task, and it downloaded and ran as expected. Cool!
BTW, I've discovered that you don't have to take *all* the batteries
out (and turn on the RCX) to get the firmware cleared; you only have
to take out one (and turn it on). Pretty obvious, even to a dim bulb
like myself, but I have to admit that I did it the hard way once or
twice :-)
d.
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Message has 1 Reply:
 | | Re: IR Tower
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| (...) A thing Markus doesn't explain very clearly (if at all) is that if you hold down Prgm and switch it on, legOS vapourises, so you only have to do the battery trick when you crash it. Cheers, Ben. (26 years ago, 24-Dec-98, to lugnet.robotics)
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Message is in Reply To:
| | Re: IR Tower
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| (...) Look at the Hitachi H8/3292 documentation -- it has all of that for you. Briefly, ROM is 0x0000-3FFF, external address space is 0x8000-0xFB7F, internal RAM is 0xFD80-0xFF7F, external address space is 0xFF80-0xFF87, and the peripheral register (...) (26 years ago, 23-Dec-98, to lugnet.robotics)
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