>
>Subject: Re: 8048 Intel programming languages
> From: Robert Borsuk <rborsuk at colourfull.com>
> Date: Tue, 10 Feb 2009 21:51:42 -0500
> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>Steven and Allison,
> I've spent some time today with SDCC and I'm sorry to say I couldn't
>find any reference to 8048 in it. The 8051 yes. Unfortunately the
>memory structure (specifically the banking and jumping) is different
>between the 8048 and the 8051. How about this: Did they ever
>release any sort of languages for the IMSAI 8048 board?
You have an Imp48????
First if you have a manual I'd appreciate a copy, I've been looking
for 28 years for one! Yes, I have one too, I know the general circuit
for mine by reverse engineering it and I do use it for playing.
As to languages for 8048, IMSAI never did. The concept of a higher level
language for a board with 1K of program space is only a thing you hear
lately. One reason is the limited stack and ram/romspace of the 8048
really does require the efficientcy of assembler. It's possile to create
some varient of a tiny micro basic but then it has to fit in 1K and also
any program in the same 1k. If you working with 8048/9 off that board
more space is possible but remember the ability to address ram without
some banking scheme is limited to 256 bytes. I'd say keep looking
though as I've likely missed a few. I'm sure it's possible to tweak
the code generator in SDCC to do 8048 and it's rare anyone uses more
than 4k. But the compiler logic to do the bank switch is likely insane
since interrupts are only handled in the low memory page. There are all
sorts of cross assemblers out there.
Allison
>
>Rob
>
>
>On Feb 10, 2009, at 2:50 AM, Scanning wrote:
>
>> Rob,
>>
>> I think a good place for you to start is with the Small Device C
>> Compiler
>> ( http://sdcc.sourceforge.net/ ) and see if that will fit your
>> needs. It
>> supports 8048, 8051, etc.. family. Good luck.
>>
>> Best regards, Steven
>
>
>>> Subject: 8048 Intel programming languages
>>> From: Robert Borsuk <rborsuk at colourfull.com>
>>> Date: Mon, 09 Feb 2009 11:19:04 -0500
>>> To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org
>>> >
>>>> Does anyone know of any programming languages (compilers)released
>>>> for
>>> the intel 8048 microcontroller?
>>>
>>
>> Lookup SDCC, Small Device C Compiler. Theres plenty of stuff for
>> 8048/9 family
>> and it's cousin the 8051.
>>
>> Allison
>>
Alrighty --
This info, gleaned from the Emulex SC02 manual:
Fujitsu 2311 and 2312 - Switch settings for * 35 SECTORS *
SW2-1 ON
SW2-2 ON
SW2-3 ON
SW2-4 OFF
SW2-5 OFF
SW2-6 OFF
SW2-7 ON
SW3-1 OFF
SW3-2 OFF
SW3-3 ON
SW3-4 OFF
SW3-5 OFF
SW3-6 OFF
SW3-7 OFF
At least this will be something to go on, if you can't locate a manual.
.. .
Sorry about that -- I no sooner hit "send", when I realized that I
transposed
numbers on the Fujitsu model number.
I don't know how close the model numbers are;
perhaps you can extrapolate the sector settings
based on the 2321 info. . .
Message: 17
Date: Tue, 10 Feb 2009 07:08:20 +0100
Jos Dreesen / Marian Capel <jos.mar at bluewin.ch> Wrote:
> Mr Ian Primus wrote:
> >
I've heard this doom and gloom talk about "when all the drives are
dead" and "when nothing is left to read $MEDIA" - and while I admit
that these things are likely to happen eventually, I also don't believe
it's a problem for any of us.
> >
> Your are wrong. It might
be true for the common formats, but there are drives out there were the
number of functioning units is approaching zero.
>
> Try finding an Honeywell-Bull D100 "Cynthia" series cartridge drive or media for instance...
>
>
> Jos
Arrg...
Yes, I know all about those drives, and I have one that it is "semi-operational". I worked on these in 1979 and had them connected to a 6800 system. While they worked most of the time, they were a bit picky. They needed 36 volt power supplies as well as others. The controller provided actually did work. The early drives had a secondary board that eventually was replaced with an LSI chip.
Their main problem was that they were a bit (well actually more than that) temperamental. The drives themselves were only 10Mbyte goodies, and used embedded servos with on-track sparing. The disks themselves were "cut-down" from 14 inch media (like 2315's).
Thankfully I eventually replaced these with SMD drives, then 5 1/4 drives with the Xebec 1410 controller (SASI). All on a 6800!
Fun in the early 80's
Hi all,
Just put my Decmate III on ebay if anyones interested.
#300293036980
Rob
Rob Borsuk
email: rborsuk at colourfull.com
Colourfull Creations
Web: http://www.colourfull.com
Does anyone know of any programming languages (compilers)released for
the intel 8048 microcontroller?
Rob
Rob Borsuk
email: rborsuk at colourfull.com
Colourfull Creations
Web: http://www.colourfull.com
Larry,
Go to _www.vintage-computer.com_ (http://www.vintage-computer.com) and do a
search on that topic.
Also, contact "Sharkonwheels" there - again do a search - he posts a lot.
He is into the Kaypros "after" 1983 versions - i.e. the "2X's", I am into
the 1983 versions.
Looks like it may have been upgraded with the Turbo.
I believe such upgrades are still available for the post 1983 versions -
Advent might be a search word to use. Shark will know. He even sells modified
Kaypros of that era.
Getting the right boot disk for the specific Kaypro you have is critical -
many do not understand this - today you need Windows - there are not very many
main options.
Kaypro had about 15 - 20 different versions before they went bankrupt.
Also, in those hectic times, many "unofficial' modifications were made that may
not have been documented, by Kaypro and previous owners of such computers.
Modifications and upgrades were very common in order to try to keep them
running efficiently, until the inevitable change to windows, after we all
invested so much in those systems, especially our time!
Sometimes you just have to take the top off and look around, especially at
chips at U43 and U47.
Please post your results on that site so others can benefit.
You can check my site out - _www.kayprosts.org_ (http://www.kayprosts.org) -
under the folder "special" for a draft of my book on computers of that era
and a 2008 Kaypro calendar I did - lots of pictures of my 6 1983 Kaypros
modified to Kaypro " 8 ' 's.
All the best.
Frank
In a message dated 2/10/2009 11:34:45 A.M. Eastern Standard Time,
laptoplarry at gmail.com writes:
The boot disk I have is looking for Turbo ROM.
I guess I need one for the 2X (without Trubo ROM).
Please help or point me in the right direction.
Thanks!
-Larry
--
This is not an automated signature. I type this in to the bottom of every
message.
**************The year's hottest artists on the red carpet at the Grammy
Awards. AOL Music takes you there.
(http://music.aol.com/grammys?ncid=emlcntusmusi00000002)
Hi folks,
> I suppose someone might magic up a way of creating DIY floppies from
> scratch in a home lab, but I'm not holding my breath.
http://www.madehow.com/Volume-1/Floppy-Disk.htmlhttp://www.mylarstoreonline.com/25ft.html
I think you want the 3mil type (assuming 3mil means 0.003", my knowledge
of non-metric units is getting rusty ;-) )
With this and some iron oxide (from China?) you have the makings of a
floppy disk - you just need a jacket and liner; something to polish it all
with and a pair of scissors (kidding).
-cheers from Julz @p
>
>Subject: Re: Anyone have a line on batteries for the NLS
> From: ard at p850ug1.demon.co.uk (Tony Duell)
> Date: Sat, 07 Feb 2009 19:32:31 +0000 (GMT)
> To: cctalk at classiccmp.org
>
>>
>> On Thu, 5 Feb 2009, Allison wrote:
>> > The only reason batteries are needed to run the NLS is the charger is way
>> > too small run run it directly.
>>
>> I found THAT out the hard way.
>> When I sold my NLS215 at VCF, I had to sell it "AS-IS" because the
>> batteries wouldn't take a charge.
>
>That's quite common with devics powered with rechargeable batteries --
>the charger on its own can't supply enough current to run the device.
For the NLS 'scopes the battery is between the charge source and the
scope power supply so if it's open (badly sulfated as the battery is
lead acid gell type) the PS has to carry the load. It's only a charger.
if you substitute a larger charger then you find the charge circuit
does not have the capacity to start the unit (initial surge current).
>Assuming the battery pack is just a battery (that is, no 'battery
>management' circuitry), you can often run the unit from a bench power
>supply connected to the battery wires _with the battery disconnected_. Of
>course this assuems you have a suitable PSU...
The pack in this case is just 3 2v cells and the "management" is the
charge circuit on the rear board.
In this case (nls miniscopes) a 6V PS can substitute for the battery at
less tha 1A (must be connected to the ground and +6V termianls of the
battery connection point internally). Only if the battery is removed first.
Note that is the battery has failed (usually sulfated from not being kept
charged) they tend to build corrosion around the terminal, they are best
removed and recycled as any gelled lead acid battery should be.
Since I use my miniscopes intermittently I've long since removed the
battery and disconnected the internal charge circuit (pull the fuse).
The battery area has a small board inserted to allow it to accept any
voltage from 9 to 30V and run from that. Since I have a number of small
12V gell cells that fit nicely in the probe pocket of the carry case
this proves more useful and maintainable. The change is completely
reverseable and the ability to use a larger and longer lasting 12V
battery as source is very handy.
The NLS is somewhat unique as it uses a lead acid type rather than NiCd,
Nimh, lithium or even common dry cells. In an emergency I have run it
off 4 'D" sized alkaline cells in an external holder for many hours.
Allison
