I did the Atari Mac emulator. The really hard part was reading the variable speed (GCR code) Mac disks on the steady speed Atari disk drive.
It's funny that no one mentions that you could just go buy these ROM parts from Apple dealers if you wanted them.
I don't understand the above reference to the "68060 based Mac". I've never heard of such a critter from anyone (emulator or not). 68040 was the furthest I ever saw.
I would appreciate it if someone would tell, someday, why Motorola could not crank up the 68060 to the ungodly clock rates that Intel achieved. I've always wondered.
(snip)
maybe the reason a lot of artistic people use Macs is that they are flat out easier and less maintenance.
(snip)
Umm, it's sort of easy to tell who *really* owns the Macs here...
"less maintenance"? Yes, that would be why the biggest problem with Macs up to the Powerbook is blown power supplies... ol' Steve just will NOT put a fan in there. I can recall my wife's PowerBook going in six times for repair. I am sure that when it was around and working she really thought outside the box but the fact is the Powerbook spent a LOT of time "inside the box" -- being shipped.
I have personally resoldered the power supply diodes etc in "classic Macs" that overheated from this DESIGN FLAW and "magically fixed" Macs.
But hey, it was "a flat out easier and less maintenance" repair!
(snip)
"but some people (like those at Apple) think the computer should be a tool to enhance your work and life making tasks easier, and for the average user it should not have to be a field of study just to get the OS running".
(snip)
My opinion is that Apple's interest in me lasts until the check clears, and that's it. At least it's honest and direct.
If you don't think so, you may want to look in a bookstore for books like "OS/X -- The Manual They Didn't Ship" and so forth. (Let me flatly recommend any book from Tim O'Reilly and Associates.)
I can tell you're not the person who has to fix Macs in your area, because it is a strange, intricate "field of study". It can be a fulltime job learning how to get a SCSI drive terminated, or a partition sector rewritten. Are you even following the discussing of multi-booting drives?
-- Dave Small
It's nice to talk about being an SA or a software engineer, and most of us have endured utterly clueless bosses. But look. Whether you're freshly out of college, about to turn 30 or 40... the thing is... you only get to do it -once-.
Do you really want to be writing Yet Another (heaven forbid) spelling checker? Do you want to work for a soul-dead manager who's just been told there's something called a "World Wide Web" out there? Remember, you are never going to get this time, nor these circumstances, again.
I elected to work as hard as anyone and teach an Atari ST to be a Mac. (Yeah, it's been a few years). Looking back, I'd do it again. Writing magazine articles on how things worked was a world of fun. I'd do it again.
For me invention and pushing the envelope are part of the beauty of living and part of the process. I've tried 9-5'ing it, and it just doesn't work. For some people, it seems to.
But think about it. If your innovations keep getting shot down at work (Do you work for AT&T?)... maybe you should be on your own.
It took me three months to bring up the Mac OS on the Atari ST. It was kludgy and had bugs, sure, but it ran MacWrite and MacPaint, which was pretty much what was out there back then. That was with one person working on it.
On the EEPROM issue, why don't people just burn a write-once PROM that can't be reprogrammed, or, just bend up the PROGRAM* pin (same effect, really) ?
I also wonder why an EEPROM with twice the space could not be used, and a simple switch on the top address pin used to select which "BIOS" to use. Or, tweak something like LILO to set an available pin somewhere during boot to do the same.
Didn't take all that much time for Phoenix, et al, to clean-room reproduce the IBM PC ROM. (Admittedly, it did ship with a nice listing and the functions were straightforward). I would be really surprised if implementing the PC BIOS on the iMac proves very hard.
Perhaps the reason MPAA are waging such a furious "piracy costs us money" campaign is to cover up the fact that they can't make money because their movies _suck_.
I hate to tell this to Hollywood, but you're not going to get a dollar out of me by remaking bad 1970's series (the next one is "Miami Vica", yargh!). It's just too bad that scripts are written by committees and have to kowtow to various pressure groups.
Pretty easy to prove: Mel Gibson and Peter Jackson have done _just fine_ when they have bypassed the Hollywood System.
Don't even get me started on "Waif Rock", where a girl moans about how hard life is at a million bucks an album.
Hmm. Call me Mr. Confused.
I see references to 15,000 degrees C as being a valid temperature. I thought fusion required extreme temperatures. Where am I going wrong?
"Sourcebook on Atomic Energy" (Glasstone) says that D+D reactions need about 40keV or ~~ 400 million degrees to start off (page 543).
The two D+D reactions listed yield (Glasstone, pp. 540):
D+D -> 2He3+n+3.2 MeV, and,
D+D -> 2He4 + 23 MeV and,
D+D -> T + p + 4.0 MeV. Since this yields tritium, I don't know why
that wouldn't open the door to:
D+T -> 2He4 + n + 17.6 Mev, which is one hot neutron indeed, and other
T+T reactions.
D+n -> T is listed as generating "large" quantities of tritium. I'm surprised this does not show up if there are neutrons around.
As Chuck Hanson says on pp.20 of "U.S. Nuclear Weapons":
"Fusion-generation neutrons have an energy in excess of 1MeV and can fission natural or enriched uranium (tuballoy or oralloy)." Am I missing something, or is this an excessively Darwin Award line of research? Natural uranium (non-enriched) is not difficult to obtain.
I too am mystified why such high energy products haven't killed the experimenters. I would be expecting on the order of 3 feet of shielding. Chuck Hanson goes out of his way to mention that fusion generates 30 times the neutrons of fission, kt for kt. Neutron flux is not healthy.
Sign me,
Confused
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I did the Atari Mac emulator. The really hard part was reading the variable speed (GCR code) Mac disks on the steady speed Atari disk drive.
It's funny that no one mentions that you could just go buy these ROM parts from Apple dealers if you wanted them.
I don't understand the above reference to the "68060 based Mac". I've never heard of such a critter from anyone (emulator or not). 68040 was the furthest I ever saw.
I would appreciate it if someone would tell, someday, why Motorola could not crank up the 68060 to the ungodly clock rates that Intel achieved. I've always wondered.
Thanks,
Dave Small
(snip) ... ol' Steve just will NOT put a fan in there. I can recall my wife's PowerBook going in six times for repair. I am sure that when it was around and working she really thought outside the box but the fact is the Powerbook spent a LOT of time "inside the box" -- being shipped.
maybe the reason a lot of artistic people use Macs is that they are flat out easier and less maintenance.
(snip)
Umm, it's sort of easy to tell who *really* owns the Macs here...
"less maintenance"? Yes, that would be why the biggest problem with Macs up to the Powerbook is blown power supplies
I have personally resoldered the power supply diodes etc in "classic Macs" that overheated from this DESIGN FLAW and "magically fixed" Macs.
But hey, it was "a flat out easier and less maintenance" repair!
(snip) "but some people (like those at Apple) think the computer should be a tool to enhance your work and life making tasks easier, and for the average user it should not have to be a field of study just to get the OS running". (snip)
My opinion is that Apple's interest in me lasts until the check clears, and that's it. At least it's honest and direct. If you don't think so, you may want to look in a bookstore for books like "OS/X -- The Manual They Didn't Ship" and so forth. (Let me flatly recommend any book from Tim O'Reilly and Associates.)
I can tell you're not the person who has to fix Macs in your area, because it is a strange, intricate "field of study". It can be a fulltime job learning how to get a SCSI drive terminated, or a partition sector rewritten. Are you even following the discussing of multi-booting drives?
-- Dave Small
It's nice to talk about being an SA or a software engineer, and most of us have endured utterly clueless bosses. But look. Whether you're freshly out of college, about to turn 30 or 40 ... the thing is ... you only get to do it -once-.
... maybe you should be on your own.
Do you really want to be writing Yet Another (heaven forbid) spelling checker? Do you want to work for a soul-dead manager who's just been told there's something called a "World Wide Web" out there? Remember, you are never going to get this time, nor these circumstances, again.
I elected to work as hard as anyone and teach an Atari ST to be a Mac. (Yeah, it's been a few years). Looking back, I'd do it again. Writing magazine articles on how things worked was a world of fun. I'd do it again.
For me invention and pushing the envelope are part of the beauty of living and part of the process. I've tried 9-5'ing it, and it just doesn't work. For some people, it seems to.
But think about it. If your innovations keep getting shot down at work (Do you work for AT&T?)
Thanks,
Dave Small
It took me three months to bring up the Mac OS on the Atari ST. It was kludgy and had bugs, sure, but it ran MacWrite and MacPaint, which was pretty much what was out there back then. That was with one person working on it.
...
On the EEPROM issue, why don't people just burn a write-once PROM that can't be reprogrammed, or, just bend up the PROGRAM* pin (same effect, really) ?
I also wonder why an EEPROM with twice the space could not be used, and a simple switch on the top address pin used to select which "BIOS" to use. Or, tweak something like LILO to set an available pin somewhere during boot to do the same.
Didn't take all that much time for Phoenix, et al, to clean-room reproduce the IBM PC ROM. (Admittedly, it did ship with a nice listing and the functions were straightforward). I would be really surprised if implementing the PC BIOS on the iMac proves very hard.
Just my opinion, as usual
-- Dave
Perhaps the reason MPAA are waging such a furious "piracy costs us money" campaign is to cover up the fact that they can't make money because their movies _suck_.
I hate to tell this to Hollywood, but you're not going to get a dollar out of me by remaking bad 1970's series (the next one is "Miami Vica", yargh!). It's just too bad that scripts are written by committees and have to kowtow to various pressure groups.
Pretty easy to prove: Mel Gibson and Peter Jackson have done _just fine_ when they have bypassed the Hollywood System.
Don't even get me started on "Waif Rock", where a girl moans about how hard life is at a million bucks an album.
-- D
Hmm. Call me Mr. Confused. I see references to 15,000 degrees C as being a valid temperature. I thought fusion required extreme temperatures. Where am I going wrong?
"Sourcebook on Atomic Energy" (Glasstone) says that D+D reactions need about 40keV or ~~ 400 million degrees to start off (page 543).
The two D+D reactions listed yield (Glasstone, pp. 540): D+D -> 2He3+n+3.2 MeV, and,
D+D -> 2He4 + 23 MeV and,
D+D -> T + p + 4.0 MeV. Since this yields tritium, I don't know why that wouldn't open the door to:
D+T -> 2He4 + n + 17.6 Mev, which is one hot neutron indeed, and other T+T reactions.
D+n -> T is listed as generating "large" quantities of tritium. I'm surprised this does not show up if there are neutrons around.
As Chuck Hanson says on pp.20 of "U.S. Nuclear Weapons": "Fusion-generation neutrons have an energy in excess of 1MeV and can fission natural or enriched uranium (tuballoy or oralloy)." Am I missing something, or is this an excessively Darwin Award line of research? Natural uranium (non-enriched) is not difficult to obtain.
I too am mystified why such high energy products haven't killed the experimenters. I would be expecting on the order of 3 feet of shielding. Chuck Hanson goes out of his way to mention that fusion generates 30 times the neutrons of fission, kt for kt. Neutron flux is not healthy.
Sign me, Confused