Quality sinks continuously ...this time: CISCO
As we all know, most of the products today are produced in a cost efficient way.
Because of this, vendors always looking for a chance to produce things cheaper.
But because this happens, also quality goes synchronously down.
This happened to Linksys Router (think about forced ci
Chicken and Egg problem... Apple II disk images converted/readable for the Apple IIe Card ?
As described in http://www.z80.eu/blog/index.php?entry= , I got an Apple IIe Card for my LC aka Color Classic.
But this leads into a chicken and egg problem.
I've read at http://www.vectronicsappleworld.com/app and in the section after it how to go on with these images.
- Quality sinks continuously ...this time: CISCO
DEC Personal Workstation Bootscreen - for Windows 7 PCs ;-)
Looking at the wonderful bootscreen of a DEC PWS 433 during BIOS boot phase, I had the idea to preserve this image. Looking around for the image file, I wasn't successful.
So I made a picture with my Nikon and cropped & scaled for Win7 Boot Updater, see
- DEC Personal Workstation Bootscreen - for Windows 7 PCs ;-)
New Toy: Macintosh Colour Classic (aka Color Classic)
After my short intermezzo with a Mac SE/30, I tried my luck with a Macintosh Colour Classic.
This machine, untruly called the ugly duck of all all-in-one Macs, has a real cute Trinitron color display CRT, and in contrast to a Macintosh Plus or a Macintosh SE, has also a LC PDS slot for some rea
- New Toy: Macintosh Colour Classic (aka Color Classic)
Virtual Floppy Drive with Windows 7 ? Really bad, it's difficult to manage.
I've needed to test floppy disk tools with my modern i7 equipped PC.
Unfortunately I have no real floppy drive built in.
So I "googled" for it, and I found one, which runs supposedly smooth with Windows 7 64bit.
Short Mac SE/30 adventures
I realized that I didn't made anything meaningful with my Apple ][ Europlus, so I decided to exchange it for another vintage computer - an older Macintosh.
My first choice was a Mac SE/30, because this one can handle up to 128MB RAM, and it's capable to run A/UX. But....
- Virtual Floppy Drive with Windows 7 ? Really bad, it's difficult to manage.
New toy, an old, autonomous working Eprom Burner, a Needham's SA-20 ...
That was really tricky.
I buyed an old but autonomous working Eprom Burner, a Needham's SA-20 (Wilke Technology), and I hoped to work with it connected to my modern PC (which has a COM1 interface).
Unfortunately only a DOS program exists so far for it (but there is hope, source code o
Commodore Plus 4 resurrected...
An underestimated beauty, the Commodore Plus 4 (aka 264), was resurrected in two steps:
First I realized that the power supply was dead. Due to the fact, that these power supply cases were glued, not fixed with screws, I did not tried to open it (to repair it).
So I cutted the very rare fo
- New toy, an old, autonomous working Eprom Burner, a Needham's SA-20 ...
Strange C64 cartridge "Story Machine" from Spinnaker Software ............ errorneous software selled from beginning?
I am always looking to complete my cartridge collection for my C64.
Now I've obtained a cartridge named "Story Machine". Regardless of the poor presentation and functionality, I thought it should work as designed, at least you should save your work to disk and load it later again
Apple I auction ended with fantastic price... selled for ~half a million EURO
Almost unbelievable, what some are willed to pay.
An Apple I was auctioned for a price others would buy a house instead.
Original Apple I are very rare, also because only about two hundred devices were selled in 1976. A similarity to the later Apple II is easy to recognize, but only in ter
- Strange C64 cartridge "Story Machine" from Spinnaker Software ............ errorneous software selled from beginning?
Forgot these ugly limits for BIOS, DOS, FAT16 ... had to re-install a Siemens PCD-4ND
Yes, I am getting old. I forgot these days with ugly limits for harddisk access.
Not only logical limits (like FAT16 vs FAT32), also hardware limits.
I have selled my Compaq Portable II last week, which was my floppy disk format conversion station (e.g. with such programs like Uniform, or
A replacement for rare and bad supported Catweasel Controller ? DiscFerret to the rescue ...
Sometimes a few guys seems to be very innovative.
Because GCR coded (e.g. Apple II floppy diskettes) floppies can't be read from "normal" floppy disk controllers, a special device for reading even exotic floppy disk tracks is needed.
A Catweasel controller is such a hardware
OT again: Fooled Antivirus - Part 2
To get a clue what I mean, download an older patch program (aka crack program) as an example for blind or at least dumb Antivirus software.
Attention: You have to deactivate your Antivirus Software to unpack it (password for unpacking: novirus). After unpacking, upload both files to virus
- Forgot these ugly limits for BIOS, DOS, FAT16 ... had to re-install a Siemens PCD-4ND
Three remarkable and rare C64 peripheral devices/cartridges
Just take a look at these three rare C64 items:
This NCS QUICK DATA DRIVE is basically a (data) tape drive, similar to Sinclairs Quickdrive, but for the C64 - I guess it's not really slower than the famous but painful slow 1541 floppy drive...
This is a rare DELA Z80
- Three remarkable and rare C64 peripheral devices/cartridges
OT: Personal Firewall "Snake Oil" .... why so many are misinformed
Yes, software vendors of security suites are really smart.
They give you always advice to have the latest anti virus solution, and, last but not least, they suggest to use personal firewalls as one part of their complete suite as well.
Unfortunately (software) personal firewalls perm
Very interesting Computer Chronicles TV Episode (1995) about Gary Kildalls lost deal with IBM
That seems to be worth to be viewed... much background information about Gary Kildalls try to compete with Microsoft, we all know how it ended.
And this photo is an early picture of both protagonists.
Bill Gates looks like a young innocent school boy (but this really misl
- OT: Personal Firewall "Snake Oil" .... why so many are misinformed
Thinkpad T23 (and now also 600E) boots CP/M-86 (despite of Wikipedia)
This is great. And it was not done with an ancient IBM PC/XT.
It was done with a Thinkpad T23 (not the most modern one, but still working with Windows XP, and having a build-in high density floppy disk drive ...).
Here is the proof:
There is a Wikipedia Entry for a boot sector e
CP/M-86 with VMWare Player and Virtualbox 4 ? YES
Last time I followed a discussion at comp.os.cpm, subject named "Running CP/M within Linux?", it was not really related with Linux, but with running CP/M-86 in an x86 emulator.
My preferred choice is VMWare Player, so I decided to get the 1.44MB floppy image from http://www.retr
- Thinkpad T23 (and now also 600E) boots CP/M-86 (despite of Wikipedia)
OT: Strange experience made with Symantec Endpoint Protection and their deficient virus detection
Recently I was desperately looking for a possibility to resurrect my Turbo Delphi Explorer Installation. A long time ago I received from Borland a message with a key for it, and that worked perfectly. After my Thunderbird Archiv was not readable anymore (from a DVD-R), I thought it should be no prob
MacOS X is *NOT* the first Unix based Operating System for Apple Macintosh's
Recently I have seen some pictures from A/UX ... a UNIX OS running on - at least - 68030 Macintosh's, according to this >>A/UX Compatibility List<< from Apple itself.
So Apple had much earlie
- OT: Strange experience made with Symantec Endpoint Protection and their deficient virus detection
Microsoft Adventure - Is this the first game from Microsoft ? And who wrote this ?
I was really surprised while "browsing" through an old BYTE issue (December, 1980).
There was an article about a MICROSOFT ADVENTURE which runs on a TRS-80 and an APPLE II (later, there was also a DOS version).
Even though it's not the best adventure, there is an interesting
- Microsoft Adventure - Is this the first game from Microsoft ? And who wrote this ?
CP/M on Apple II... new efforts
I've found a new blog about the efforts to get CP/M running on a modern hardware expansion for APPLE II's (= CFFA). See http://applecpm.blogspot.com/ ... hopefully he will have success.
It's amazing that there is still a lot of ongoing development for Apple 2 enthusiasts.
- CP/M on Apple II... new efforts
Debian Linux 5.0.9 "Lenny" for DEC Alpha
I have to add one note:
There is still a living community related with a Debian Port for Alpha, regardless of the fact, that a port of Debian Linux for Alpha isn't developed further (and supported) anymore.
There is a newsgroup named linux.debian.ports.alpha - and there are still new
- Debian Linux 5.0.9 "Lenny" for DEC Alpha
DEC Alpha old advertisment and some PWS maintenance links
In 1999, this (print) ad was very demonstrative, and many like me thought, this will be the future.
Do you remember ?
(btw if you're using Firefox and Adblock, this image may be blocked too)
Regardless of this, I found some useful links for my DEC PWS Miata.
- DEC Alpha old advertisment and some PWS maintenance links
Apple Lisa 1 demo - surprisingly with 5 1/4" floppy disk drives (!)
Interesting blog and site of Rudolf Brandstötter, can be found at http://alker33.wordpress.com
He shows an Apple Lisa 1 running with a very early operating system version - named "Lisa Office System"(LOS) 1.0 - and surprisingly also with a kind of 5 1/4 inch floppy disk drive na
- Apple Lisa 1 demo - surprisingly with 5 1/4" floppy disk drives (!)
16 Bit but already extincted: ATARI ST - Amiga competitor, not PC killer
A long time ago, I developed a BBS software for Atari ST...
This computer was ahead of the times, he offered a powerful CPU, a GUI (like the Macintosh), and was affordable !
Unfortunately marketing and also product development was chaotic.
I remembered it again and buyed o
- 16 Bit but already extincted: ATARI ST - Amiga competitor, not PC killer
ZX81 Kits still available. A MS-DOS 1.x and 2.x version assembler source.
A few mixed news here:
Found a web site which still offers ZX81 kits.
Like in the "Good old days", you can create your own, brand new ZX81.
Just visit http://www.zx81kit.com/zx81_kits.htm
The costs ? A bit expensive... £199.99
Very interesting, to
- ZX81 Kits still available. A MS-DOS 1.x and 2.x version assembler source.
A(nother) great blog moved to a new address
A great blog with tons of tipps using emulators for using vintage computer software moved:
This site is still a rich source even for re-compiled programs e.g. to run software on DEC
- A(nother) great blog moved to a new address
IMSAI 8080 info page + new z80pack link + ebook 8080/Z80
Lucky guy - he got a full equipped IMSAI 8080:
And the sequel: http://www.nekochan.net/weblog/archives
This blog has many other retrocomputer entries, too.
The former Z80PACK site "unix4fun" will not be recovered.
- IMSAI 8080 info page + new z80pack link + ebook 8080/Z80
This is the first "Personal Computer" (not Altair, not Scelbi, not Micral) ?
This development system was created from Intel in 1972, and its CPU is an Intel 8008.
I didn't found so much infos about it yet, but it seems to be the oldest computer with a 8 bit CPU in one desktop case.
Some additional pictures can be found here:
Offtopic: Finally a Delphi 64bit compiler will be available soon
Yes, good things can take time.
But now, there is some hope... I was waiting for a 64bit version of Delphi for years.
Now there is one:
You can view a sneak preview movie about it at embarcadero.com:
- This is the first "Personal Computer" (not Altair, not Scelbi, not Micral) ?
Another floppy emulator (works with TRS-80, Apple II a.s.o.)
Amazing what some had already developed... it's a silicon floppy which can emulate even disk drives for an Apple II, but also for unusual disk formats like the TRS-80 SD/DD mixed ones.
Just take a look at
It doesn't look very e
Kind of a network connection to every CP/M computer ...
Interesting idea: Take a device which can do conversion between TCP/IP and a Serial Port ...
This is not very cheap, but seems to be an easy way to get files through an Ethernet network or even via WiFi connection from and to a CP/M com
Another real Z80 portable - today we would talk about a netbook... 1987 it wasn't a sensation but very handy
Clive Sinclair's last computer creation was manufactured by his own company Cambridge Computer. It's a Z80 (3.2768 MHz) based very slim and handy laptop, has a LCD display with 6 rows and 80 columns (native resolution is 640x64 pixels), and at least 32KB RAM.
You can use additional ca
- Another floppy emulator (works with TRS-80, Apple II a.s.o.)
Got a (rare) C64 COMAL 80 cartridge !
Not very spectacular, but that's still a good news for me.
A very smart alternative for the build in BASIC 2.0, that's COMAL80.
It's working without any special procedure... just insert cartridge and start the C64:
It's an almost dead programming langua
- Got a (rare) C64 COMAL 80 cartridge !
Floppy Disk emulators which can write !
There is not only the "KryoFlux" which is designed to "preserve" old disk formats.
Unfortunately there is still no possibility for all these with KryoFlux read disk images to write it back to the floppy disk...
There is also HxC Floppy
100 years IBM.... do you remember the advertisments about IBM PCs ?
100 years of IBM - that's worth to mention.
Without IBM, many inventions were missing, you can see a short overview at Youtube:
You can also see a longer film about IBMs last 100 years here:
Enormous feedback for a simple question about Fortran 66 compatible compilers
I issued an entry named "Looking for a real Fortran-66 compatible PC compiler ..." in four newsgroups:
- Floppy Disk emulators which can write !
Still waiting for OpenVMS ... my DEC Alpha Personal Workstation
My (former) dream machine:
Working with an Alpha 21164 64Bit CPU at 433MHz, it sounds not really amazing compared to current PCs (e.g. with an Phenom 6 core processor).
But it can run VMS. That's a very old operating system, well known for DEC-10, VAX or similar devices. But it&
- Still waiting for OpenVMS ... my DEC Alpha Personal Workstation
Finally after several tries I managed it.... my Highscreen Organizer aka Zeos Pocket PC runs CP/M programs
It was not easy.
I tried to use INTERLNK/INTERSVR several times, but it fails every time:
As you know, I set up a virtual machine with Windows 98 SE ... INTERSERVER was running.
But the connection between the two computer can't be established. May be it was not only related with
New toy - A pocket PC by "Highscreen" (Highscreen Handy Organizer)
I was very surprised when I saw the Highscreen Handy Organizer the first time.
It has a full work "AT" compatible keyboard, 80x25 character LCD screen, a parallel and a serial interface, and 2 IC card (PCMCIA SRAM memory card) slots.
It has also a 7,15 MHz NEC V30 CPU, which is v
- Finally after several tries I managed it.... my Highscreen Organizer aka Zeos Pocket PC runs CP/M programs
Updated PX-8 ROM and really NEW Epson PX-8 Geneva devices still available ...
I've created an EPSON PX-8 ROM with a modified Turbo PASCAL 3.0 main compiler file.
I was trying to work with the "original" version but due to the very small RAM Disk size, even .BAK files which are created automatically are too much.
So I patched it in a way that no Backup
- Updated PX-8 ROM and really NEW Epson PX-8 Geneva devices still available ...
Recommended vintage computer pages...
Yes, no new technical entry.
But one brainteaser for you: What's that ?
Please comment or send me an email.
Instead of "googling" again and again, I am posting a few very interesting pages here, which are living (no static pages since years):<
Interesting device for (real, not emulated) old CP/M computer : A "serial" mass storage (uDRIVE-uSD-G1)
Can be seen here:
You only need a power supply with 3.6V-5.5V.
It has a serial interface (TTL levels) with auto-baud feature from 300 to 256K baud rates.
You can use microSD cards up to 2GB (formatted with FAT16).
CP/M Walnut Creek CD download possibilities... didn't found so many ...
Have added a download possibility of the CP/M Walnut Creek CD here.
Many (not all) files can be found also here.
The original Simtel website doesn't offer these files anymore, see here.
A few rare files can be found also here.
It's a pitty that there a
- Recommended vintage computer pages...
A shrinked Altair 8800 as a replica - very nice (still need screenshots of the working system)
Vince Briel developed already a lot of other interesting things like a working Apple I replica and a KIM replica (of course 6502 based, not 8080 or Z80).
Now he had a brilliant new idea ... building an Altair replica (with an emulated 8080 cpu based on an ATMEL AVR) ... I was a bit sceptical be
- A shrinked Altair 8800 as a replica - very nice (still need screenshots of the working system)
Captain James T. Kirk (William Shatner) sells Commodore VIC/VC-20 - amazing !
Wow. I love old computer advertisments. This one is my favorite:
And the page with the Startrek BASIC game will be more interesting than ever ;-)
Please take a look also at the commercial video with William Shatner at Youtube:
- Captain James T. Kirk (William Shatner) sells Commodore VIC/VC-20 - amazing !
Now again a Sharp Pocket Computer - but the (almost) Z80 compatible one...
I got a Sharp PC-1500 last week and I liked it, especially the possibility to use Z80 machine code (exception: status register usage is different). That's very easy, because even if you just have the basic device without anything else, you can use the BASIC commands PEEK, POKE and CALL (you sho
- Now again a Sharp Pocket Computer - but the (almost) Z80 compatible one...
Another remarkable milestone: Sharp Pocket Computer (first: PC-1211)
... which has two 4-Bit CPUs (!) from Sharp, SC43177 und SC43178 labeled, driven with only 256 KHz (yes, KILO not MEGA). This was my first "Computer" I had, and I loved it, because I was able to use the Pocket Computer at school (think about an electronical cheat sheet) also.
Some thoughts about transfering disks or at least, files from a PC to a vintage computer
I've created a page about transfering files from a PC to an old CP/M computer (e.g. my Kaypro IV) at http://www.z80.eu/transfercpm.html .
But I forgot to mention how to get able to use or prepare a PC.
I took my (mentioned in a blog entry before) Compaq Portable II to use Uniform for
- Another remarkable milestone: Sharp Pocket Computer (first: PC-1211)
Vintage PC portables - oldies but goldies... my four favorite ones ;-)
Here are my favorite list of old (more than 20 years old) PC portables:
Number one - a Compaq Portable (with an Intel 8088 CPU):
Number two - an IBM PC Portable (Type 5155, with an Intel 8088 CPU):
Number three - a Compaq Portable II (with an Intel 80286
- Vintage PC portables - oldies but goldies... my four favorite ones ;-)
Microshell - a mighty CCP replacement ... and NIPSOFT Commander (for MZ-800 CP/M 2.2)
I have added a page about a very useful CP/M shell, which can be seen as a CCP replacement, too. It was a very expensive ($150) utility, so this could be one reason why it was not wide spreaded nor "popular". But New Generation Systems microshell (version 2.0) was very handy, it was easily
- Microshell - a mighty CCP replacement ... and NIPSOFT Commander (for MZ-800 CP/M 2.2)
Love on the buses: The S-100 and me - an interesting article at theregister.co.uk
There is a really refreshing article about the S100 bus, the history around, nice pictures of a S100 bus system and cards at http://www.theregister.co.uk/2009/05/01/s100/
Don't miss that article, regardless of the fact that it's nothing really new told, but I am convinced that i
- Love on the buses: The S-100 and me - an interesting article at theregister.co.uk
Another rare, but surprisingly innovative CP/M portable: 'Zorba portable computer'
Yes, I didn't recognize it. But there were not many 'Zorba' produced 'til 1984.
And as far as I can found any kind of info, this computer wasn't selled in europe.
It looks similar to a Kaypro or a Philips P2000 (not the colors, but the concept), and it has also a 4
- Another rare, but surprisingly innovative CP/M portable: 'Zorba portable computer'
Shame on me... didn't finish my CP/M Commander program, but now somebody else already did it...
I was looking for a german article about TCP/IP for CP/M and the progress this project made, and I saw there are some utilities like tftp and ping now available (still looking for a real FTP.COM...).
Then I was looking what the site offers also.
And I was surprised that somebody implemente
- Shame on me... didn't finish my CP/M Commander program, but now somebody else already did it...
Predecessors of 8080 hardware.... almost forgotten - R2E Micral , a Intel 8008 based "PC"
For many of us, they are not known or at least forgotten.... but 3 years before the Altair 8800, in January 1973, there was already a hardware available for computer enthusiasts:
The R2E Micral was one of the first, may be the first computer which can be called "Microcomputer",
- Predecessors of 8080 hardware.... almost forgotten - R2E Micral , a Intel 8008 based "PC"
Cool ... an Apple II, a SD/MMC card for storage, a Z80 CPU, 80 columns card, all together implemented in an FPGA prototype
Amazing what is possible !
An Apple II and some peripheral stuff, fully equipped, and almost 100% compatible, but not running on old hardware - it can be done with a prototype board (Altera/Terrasic DE1 board).
Alex Freed did that ... his first steps began earlier with his FPGApple,
I managed it to downgrade a Turbo PASCAL (5.5) Source of a Z80 Assembler to a Turbo PASCAL 3.0 version...
... and it can be compiled on DOS error free. Now I tried it on CP/M 3.0 and guess what happens ?
It was too big, over 50KB size was too much for the Compiler. So I was reminded on these days and the size limitations suddenly again :-(
I am sure it can be stripped from all comm
- Cool ... an Apple II, a SD/MMC card for storage, a Z80 CPU, 80 columns card, all together implemented in an FPGA prototype
Two interesting pages about the Olivetti M20 - one of the few computer which have a Z8000 and can run CP/M-8000
Full with additional links and infos, more than just a vintage computer museum entry:
To get an impression from what I'm talking - here's an image from an M20 machine,
- Two interesting pages about the Olivetti M20 - one of the few computer which have a Z8000 and can run CP/M-8000
Another very interesting vintage computer blog ... not very frequently updated, but good entries !
I found surprisingly two other vintage computer blogs,
one from Howard Harte at http://hartetechnologies.com/Happenings/nfblog/
(with less entries for the present but many for 2007),
and a bigger one at http://www.bytecellar.com/,
with a bigger number of Apple II related entries.
Cracking an Osborne 1 into parts - interesting pictures
Very interesting pictures can be found at TechRepublic - they split an Osborne 1 part by part, hopefully they assembled it back to a working unit...
As far as I know, that's an older one, not the newer model with less r
- Another very interesting vintage computer blog ... not very frequently updated, but good entries !
How to transfer Apple Disk Images from a modern PC to an Apple II (with a super serial card)
Indeed I didn't think about it yet. But it is not too difficult.
Getting an image from Asimov's site at ftp://ftp.apple.asimov.net/pub/apple_II/images/
Reading all infos at http://adtpro.sourceforge.net/
Transferring the image back to a real Apple ][.
- How to transfer Apple Disk Images from a modern PC to an Apple II (with a super serial card)
Another rare CP/M portable from Televideo...
Had time to search for several topics, and suddenly I found a hint about a not so well known CP/M 2.2 portable computer (less famous):
A Televideo TPC-I, not really portable (with a similar weight as the Osborne 1) but still an "all-in-one" CP/M machine.
- Another rare CP/M portable from Televideo...
Such a cute portable ... and unreachable still (to rare, to expensive...)
Still dreaming of a Otrona Attache portable CP/M computer, it's very handy (for 1982) and despite of this is still a full featured machine.
This picture shows another model with different floppy disk drives compared to the one I already have shown at http://www.z80.eu/otrona.html ...
Vintage computer pages disappearing again and again....
It happens... I talked about it a few blog entries before already....
Miguel's Amstrad software and compiler pages seems to be lost (I mirrored his MESCC Small C variant now) ...
- Such a cute portable ... and unreachable still (to rare, to expensive...)
Many interesting documents (e.g. PDF) can be found at bitsavers.org
Many of you already know that there is a gold mine for old (often scanned) documents at www.bitsavers.org , users and service manuals and other technical documents as well.
If not, try it (see reated link below), it's amazing what can be found there !!!
Back from holidays, a Philips P2012 with a CoPower card is waiting...
I was really happy getting back from holidays and finding a big package in my house corridor - a Philips P2012 equipped with a CoPower 8088 card, which make it possible to run not only Z80 based CP/M 2.2 but also MS-DOS 2.11 on the coprocessor card (THANKS TO
TON SCHLUTER HERE AGAIN !).
TCP/IP stack for CP/M based systems ?
Following the discussions about a possible implementation in comp.os.cpm, I asked myself for what reason would this a goal ?
On http://www.cpm.z80.de/randyfiles/DRI/cpm-tcp.zip an early try is ready for download, but it's made for a Xerox 820, nowadays a real rare computer.
If you &qu
A 2nd CP/M-86 software repository mirror already exist
There is already a second mirror ... at http://z80cpu.eu/mirrors/klaw/
Somebody named "Katzy" wrote this in comp.os.cpm, thanks.
So at the moment there is no need for an additional mirror, I guess.
A bit concerned about the CP/M-86 software repository (Kirk Lawrence's heritage)
At the moment http://www.nostalgia8.nl/mirrors/cpm86/ is a mirror from the old seanet/~klaw CP/M-86 site, and that's good. Unfortunately I have seen many web pages already gone into the black hole of the internet, and using www.archive.org is not always the solution, because very often the bina
Have decided to use a blog also...
Yes, I always was a bit displeased about blogs. But I guess it's one form to get a feedback, and in the other hand also to drop some infos or ideas without using again and again a web editor or a content management system. So I will use it until it will get me stressed ;-)
- Many interesting documents (e.g. PDF) can be found at bitsavers.org