[comp.sys.amiga] a few questions...

ugmiker@sunybcs.UUCP (02/18/87)

I have a couple of questions from a new Amiga user trying to make the 
most of his new computer.    Either a response to the public, or email 
would be great,  I feel the first would be more helpful to others with the
same problems(I know I see alot of questions I could have used answered 
never answered, or atleast not posted).

1)  I have a Legend 1080 printer, and no driver, can anyone tell me how
   to make one.  I know there is a program that does it, but I dont have 
   it, so I was wondering if there was some way of making one without it?

2)  Also while working on the amiga, and not using the printer, it sounds 
   like the printer resets every once in a while, maybe every ten minutes.
   Is this normal? does this have to do with the Amiga o.s?

3)  I also have a modem(kapertronic [sp??]) that has a clock in it.  I have 
   seen programs on bbs's at home (I am away at school now) that set the time
   from the modem.  I was wondering how could I write to the modem in my 
   startup-sequence and read from it and set the system time without having
   to run any programs at boot up time???

4)  This might be a stupid questions(but we usually learn most from that type)
   BUT:
       Does "SCSI" = IBM compatability ?????
    In the Febuary issue of BYTE I was reading "WHAT'S NEW" and under the 
   peripheral heading the magazine talked about a "SCSI"/hard drive controller
   card that will support as many as seven "SCSI" devices.  I thought that was
   great, seven IBM compatable devices off the Amiga, finally!! low priced hard 
   drives for the amiga!!!!  But then I realized  I had no idea what "SCSI"
   meant.  Does "SCSI" mean IBM compatability for hardware????  The article is 
   on page 38 if you think there might be something important I left out.


				 	THANKS......
						mike

p.s. to all those who were talking about the mouse and trackball troubles..
     just remember, in ZERO GRAVITY, they both work the same!!!!!!!

daveh@cbmvax.UUCP (02/19/87)

>  This might be a stupid questions(but we usually learn most from that type)
>  BUT:
>     Does "SCSI" = IBM compatability ?????
>  In the Febuary issue of BYTE I was reading "WHAT'S NEW" and under the 
>  peripheral heading the magazine talked about a "SCSI"/hard drive controller
>  card that will support as many as seven "SCSI" devices.  I thought that was
>  great, seven IBM compatable devices off the Amiga, finally!! low priced hard 
>  drives for the amiga!!!!  But then I realized  I had no idea what "SCSI"
>  meant.  Does "SCSI" mean IBM compatability for hardware????  The article is 
>  on page 38 if you think there might be something important I left out.

While you can probably find SCSI hard disk controllers for the IBM family,
the standard IBM hard disk interface is the slower ST-506 interface.  The
Apple Mac PLUS sports a SCSI port, as do various other machines.  Apple's
presence is bound to drive the price of SCSI hard drives lower, though I
doubt they'll be as low as ST-506 for awhile.  The advantages of SCSI are
many, though; its a general high speed interface, useful for thing other
than just hard disks.  And  hard disks are available in SCSI form in many
different sizes, while ST-506 drives are commonly just 10 or 20 megs
(MS-DOS can't handle disk partitions over something like 30 megabytes).

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dave Haynie	{caip,ihnp4,allegra,seismo}!cbmvax!daveh

      You too can put the POWER of RANDOM NUMBERS to work for you!

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

lrj@batcomputer.UUCP (02/19/87)

In article <2373@sunybcs.UUCP> ugmiker@joey.UUCP (Michael Reilly) writes:
>I have a couple of questions from a new Amiga user trying to make the 
> [...]
>4)  This might be a stupid questions(but we usually learn most from that type)
>   BUT:
>       Does "SCSI" = IBM compatability ?????

	  Not really -- SCSI stands for "Small Computer System Interface".
	To quote from _System_Administration_on_the_Sun_Workstation_:

		  "...  SCSI uses an adapter to translate between
		the system bus and a SCSI bus.  The SCSI bus is a
		simple interface standard for communicating with
		peripherals. ..."

	  If i recall correctly (i'm sure someone will holler if i don't)
	a SCSI disk is ideally just a bunch of numbered blocks where you
	can write data to and read it from.

	  To use a SCSI device, of course, you're going to have to have
	software knows how to deal with it.  I would make SURE that
	a SCSI peripheral (1/4 inch tape, disk, whatever) worked with
	what i wanted to use it on before buying...

				-- Lewis R. Jansen, LASSP Systems Grunt
					lrj@lasspvax.tn.cornell.edu

grunau_b@husc4.UUCP (02/20/87)

In order to provide a more direct answer to the original question "does SCSI
mean IBM compatability?", the answer is emphatically "No, they are apples and
oranges".  Some PC-DOS machines are no doubt equipped with SCSI boards, but
whether or not something has SCSI compatability has no bearing on whether it
is IBM compatible (or even Mac compatible, and Macs DO have SCSI ports).

SCSI is an interface standard, like RS-232 (serial) and Centronix (parallel).
It is the high-speed interface, with a standard throughput of 10Mbits/sec
(1.25MBytes/sec).

It stands for "small computer system interface" and is a fixture of expensive
workstations like Suns;  it descended from something called SASI for these
types of machines.

When something is SCSI compatible, that means (1) it could very well be a very
fast port, good for hard disks, and (2) you can attach to it up to seven
devices that can be talked to in a standard SCSI protocol, and are not
restricted to manufacturers that know how to make devices attachable to your
specific machine and only your specific machine.

BTW:  the Mac's SCSI port has a throughput of only 320KBytes/sec -- about one-
quarter the standard;  I do not know what the explanation of this is.  And the
Atari ST's DMA port, which does support 10Mbits/sec, is supposed to be quasi-
SCSI-standard, though how quasi I am not sure.
grunau@husc4.UUCP

or

--- !seismo-----
		\
--- !rutgers----- !husc6!husc4!grunau
	    	/
--- !decvax!ihnp4

or

For BITNET, I believe the hostname is "harvard".

rht@smsdpg.uu.net (Randy Thompson) (03/16/89)

Hi, I an new to the Amiga and have a few questions about its capabilities.

1) I know that a DOS Co-processor is available for the system, does it really
   work, will it allow the use of PC compatable disk drives & display cards
   (eg. can I use EGA/VGA software & be compatable?)

2) Is there a Unix port for the Amiga, if so, who has it & is there any 
   software to speak of for this OS?

3) Are there (m)any network adapeters available, Ethernet? Token? or can I
   use the same card as a PC if I am running in a PC Emulation mode?

4) Most important (so I dont have to ask more silly all encompassing 
   questions) where is the best place to look for more information on
   these topics?

I realize that these questions are very broad and almost impossible to answer
completely. The main intent is to determine if these things are a reality, or
if I am just dreaming. Also to find a place to look for more info.

Thanks in advance for your help!

Randy Thompson (uunet!smsdpg!rht)

limonce@pilot.njin.net (Tom Limoncelli) (03/19/89)

Nobody else has answered these so let me take a shot at 'em:

In article <206@smsdpg.uu.net> rht@smsdpg.uu.net (Randy Thompson) writes:

> Hi, I an new to the Amiga and have a few questions about its capabilities.
> 
> 1) I know that a DOS Co-processor is available for the system, does it really
>    work, will it allow the use of PC compatable disk drives & display cards
>    (eg. can I use EGA/VGA software & be compatable?)

It is for the Amiga 2000 line (which includes the 2500).  It is
basically a IBM PC on a card.  You have IBM slots, etc all available.
The display appears as a window on your screen and can co-exist with
the windows of your multitasking Amiga OS.  (IBM can only run one
program at a time... of course).  There is a AT Compatable bridgecard
available (or coming soon... depending on what country you are in).
If you require EGA/VGA you can plug in a EGA/VGA card and attach a
separate monitor and voila you have EGA/VGA.

> 2) Is there a Unix port for the Amiga, if so, who has it & is there any 
>    software to speak of for this OS?

Commodore makes it.  It requires a A2620 (68020 accellerator card) and
their hard drive controller and a tape backup unit.  If you buy all
those things as a package it's called the Amiga 2500UX but you can
take a 2000 and "make your own".  GVP claims that their 68030
accellerator will be compatible and will run Commodore's Unix too.
***This is not currently shipping.***

> 3) Are there (m)any network adapeters available, Ethernet? Token? or can I
>    use the same card as a PC if I am running in a PC Emulation mode?
Ethernet?  Yes.  Token?  No.  The Amiga doesn't accept IBM cards
(except for the Bridgeboard's slots) but more and more Amiga cards are
being released that do such things.  

> 4) Most important (so I dont have to ask more silly all encompassing 
>    questions) where is the best place to look for more information on
>    these topics?
A good dealer (hard to find) or um..... well... people on the net.
Commodore has a program to make sure more and more dealers know all
about such things.

> I realize that these questions are very broad and almost impossible to answer
> completely. The main intent is to determine if these things are a reality, or
> if I am just dreaming. Also to find a place to look for more info.
> 
> Thanks in advance for your help!
> 
> Randy Thompson (uunet!smsdpg!rht)

Hope that helped!

-Tom
-- 
 Tom Limoncelli -- tlimonce@drunivac.Bitnet -- limonce@pilot.njin.net
            Drew University -- Madison, NJ -- 201-408-5389
Standard
Disclaim
er.

ecphssrw@afws.csun.edu (Stephen Walton) (03/22/89)

In article <Mar.18.12.44.25.1989.29612@pilot.njin.net>, limonce@pilot (Tom Limoncelli) writes:
>Nobody else has answered these so let me take a shot at 'em:

Not true.  I'm sure I'm not the only one who answered the poster via
e-mail instead of posting.  "When in doubt, use mail."
--
Stephen Walton, Dept. of Physics & Astronomy, Cal State Univ. Northridge
RCKG01M@CALSTATE.BITNET       ecphssrw@afws.csun.edu
swalton@solar.stanford.edu    ...!csun!afws.csun.edu!ecphssrw

ecphssrw%afws.csun.edu@cunyvm.cuny.edu (03/22/89)

In article <Mar.18.12.44.25.1989.29612@pilot.njin.net>, limonce@pilot (Tom Limon
celli) writes:
>Nobody else has answered these so let me take a shot at 'em:

Not true.  I'm sure I'm not the only one who answered the poster via
e-mail instead of posting.  "When in doubt, use mail."
--
Stephen Walton, Dept. of Physics & Astronomy, Cal State Univ. Northridge
RCKG01M@CALSTATE.BITNET       ecphssrw@afws.csun.edu
swalton@solar.stanford.edu    ...!csun!afws.csun.edu!ecphssrw

bjmills@crocus.waterloo.edu (Brad Mills) (11/28/89)

A few queries:

1) Anybody have any experience with the AMAX Mac simulator?  If so,
   I'd like to hear from you.

2) Is there a cheap source for memory chips that anyone knows of?  I intend
   on purchasing an expansion card, and populating it myself if the
   cheapest way I know of doing it.

Thanks.

lphillips@lpami.wimsey.bc.ca (Larry Phillips) (07/16/90)

In <51083@iuvax.cs.indiana.edu>, amhartma@silver.ucs.indiana.edu (Andy Hartman - AmigaMan) writes:
>	2) Why (on my 3 meg machine) do I get the following when I type 
>	   "avail"
>
>		In-use    Largest
>		------    -------
>		129648    2041520
>
>Where is the 3rd meg? (I interrupt WB immediately upon boot so nothing loads..)
>(Note:  I left out 2 fields of the actual output.)

What's in the fields you left out? Largest refers to the largest single hunk,
and is no indication of total memory. The Maximum field tells you how much
memory you have. If this is less than 3 megs, on your 3 meg machine, please
feel free to ask again, but giving the full output from avail, as well as
stating the model of your machine, and what sort of expansion memory and other
peripherals you have installed.  You will be more likely to get an answer if
you supply more information.

-larry

--
The raytracer of justice recurses slowly, but it renders exceedingly fine.
+-----------------------------------------------------------------------+ 
|   //   Larry Phillips                                                 |
| \X/    lphillips@lpami.wimsey.bc.ca -or- uunet!van-bc!lpami!lphillips |
|        COMPUSERVE: 76703,4322  -or-  76703.4322@compuserve.com        |
+-----------------------------------------------------------------------+

amhartma@silver.ucs.indiana.edu (Andy Hartman - AmigaMan) (07/17/90)

I have a few questions:
	1) Is there a program which will un-fragment memory?

	2) Why (on my 3 meg machine) do I get the following when I type 
	   "avail"

		In-use    Largest
		------    -------
		129648    2041520

Where is the 3rd meg? (I interrupt WB immediately upon boot so nothing loads..)
(Note:  I left out 2 fields of the actual output.)

	3) Someone tell me where to get movie!  (I can't find it!)

Sorry if these have been asked before.

Thanks,

AMH
* Andy Hartman       | I'd deny half of this crap anyway!| "Somedays, you just
* Indiana University |-----------------------------------|  can't get rid of a
*    //	 Amiga Man   |   amhartma@silver.ucs.indiana.edu |  bomb!" 
*  \X/	 At Large!   |   AMHARTMA@rose.ucs.indiana.edu   | - Batman (original)

jjszucs@cbmvax.commodore.com (John J. Szucs) (07/17/90)

In article <51083@iuvax.cs.indiana.edu> amhartma@silver.ucs.indiana.edu (Andy Hartman - AmigaMan) writes:
>I have a few questions:
>	1) Is there a program which will un-fragment memory?
>

Defragmentation of memory by moving allocated blocks in memory (the memory
equivalent of disk defragmentation) is not possible under the current
Amiga memory management design because applications receive a direct pointer to
the memory that they allocate. If that memory is moved, there is no way for
the program to know that the pointer they received from Exec when they
made the allocation is now invalid.

However, Exec will automatically coalesce memory chunks as memory is freed
by programs in the system. For example, if a block of memory is allocated
as follows:

+-----------+---------------------------+-----------+
| 1/2K Free | 1K Allocated by Program A | 1/2K Free |
|-----------+---------------------------+-----------+

and program A frees the memory it allocated, the above will be coalesce into
one 2K block of free memory.

>	2) Why (on my 3 meg machine) do I get the following when I type 
>	   "avail"
>
>		In-use    Largest
>		------    -------
>		129648    2041520
>
>Where is the 3rd meg? (I interrupt WB immediately upon boot so nothing loads..)
>(Note:  I left out 2 fields of the actual output.)

The full output from avail is probably similar to this (this is from my 5 meg
A2500 with 1 meg of chip RAM running Kickstart/Workbench Release 2.0):

Type	Available  In-Use  Maximum  Largest
chip	   715320  332232  1047552   714976
fast	  3509536  684768  4194304  3506216
total	  4224856 1017000  5241856  3506216

The Available column indicates the currently available number of bytes of
chip RAM, fast RAM, and all RAM in the system.

The In-Use column indicates the number of bytes of chip RAM, fast RAM,
and all RAM currently allocated in the system.

The Maximum column indicates the total number of bytes of chip RAM, fast
RAM, and all RAM in the system (available or in-use). On a 3MB system,
assuming 1MB of chip RAM, and 2MB of fast RAM, the Maximum column should read:

Type	...	Maximum
chip		1047552
fast		2097152
total		3145908

Note that these figures may not exactly match the results on your system,
but they should be fairly close.

The Largest column indicates the size of the largest contiguous block of
memory of chip RAM, fast RAM, or any RAM. For example, if on a 1MB system,
the memory is allocated as follows:

|--------------------------------1024K-------------------------------|

+-----------+--------+--------------+--------+-------------+---------+
|400K system|32K free|135K Program A|96K free|90K Program B|271K free|
+-----------+--------+--------------+--------+-------------+---------+

The Largest column would should 271K.

>* Andy Hartman       | I'd deny half of this crap anyway!| "Somedays, you just

================================================================================
|| John J. Szucs                    || The opinions expressed are my own and  ||
|| Systems Evaluation Group         || in no way represent the opinions or    ||
|| Product Assurance Department     || policies of Commodore Technology, Inc. ||
|| Commodore Technology, Inc.       || or any associated entity.              ||
================================================================================
...{rutgers|uunet|pyramid}!cbmvax!jjszucs
jjszucs@cbmvax.commodore.com

amhartma@silver.ucs.indiana.edu (Andy Hartman - AmigaMan) (07/17/90)

Here is what I got to my questions I asked just yesterday...

1) Is it possible to Un-fragment memory?
	
Answer: No.  You would need an MMU to do it and the OS would have to support
	it.

2) Why do I only have 1790000 for the "Largest" field of the 'avail' command?

Answer: It's the largest contiguous block of memory.  Fast and chip ram are
	not contiguous between each other.

3) Where is movie?

Answer: FF116 (available from a number of places...)

Thanks to all who answered my questions...

One more:  Why, upon cold-boot, doesn't everything fill up memory from the 
	   first address until it runs everything it needs to?  Also, what
	   ABSOLUTELY HAS TO BE in _chip_ ram? (this could answer part 1)

Thanks to all for the help,

AMH
* Andy Hartman       | I'd deny half of this crap anyway!| "Somedays, you just
* Indiana University |-----------------------------------|  can't get rid of a
*    //	 Amiga Man   |   amhartma@silver.ucs.indiana.edu |  bomb!" 
*  \X/	 At Large!   |   AMHARTMA@rose.ucs.indiana.edu   | - Batman (original)