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The Amiga and C= computers that refuse to die

Philips cm 8833 scart repair luck

Amiga Classic Posted on Thu, November 15, 2012 17:09:42

Ive got this monitor as gift from the chairman of Amiga Club Belgium Simon. He warned me the scart had issues, but told me composyte was ok.

Well it’s nice to see what the problem is (various loose contacts on the scart)

It looks like little ilands, they effectively don’t work any longer.

I am going to use the monitor for testing purposes.

All of those “ilands” did not give any contact no longer. Messured on the wire beep beep, messured on the print nothing…

Anyhow 5 minutes further, fixed!

Turbo Chameleon tested.

Commodore 64 Posted on Wed, February 01, 2012 16:52:00

Main web page:

Vesalia —-

Individual Computers. (eg Jens)

Peter Wendrich

To say this the simple and easy way, this cartridge can be compared with a commodore one, natami, fpcga replay etc.. But it can be plugged in a c64.

The Chameleon is a cartridge that started life to duplicate the VIC II screen on a vga monitor, in other words it brings a vga connector for the C64.

As the original author had an fpga in his hands features where added like 1541 emulation and much more.

Below this review is the current specification list taken from:

Please note that this cartridge can work in two modes one is referred as stand alone mode, the other is plugged in a c64!

In standalone mode you use a CDTV remote, ps/2 mouse and keyboard, usb cable to power it. It has those ports thanks to a so called break out cable. It even has a serial connector so you can hook up a real drive and transfer disks without a c64.

When it is plugged in the C64 you take power from the c64, use the 64 keyboard and c64 joystick ports. However the ports stay active so the pc keyboard can be used. Wich also can be used is the cdtv remote controller so you can relax in a chair while you play a game.

Sadly when you start the Amiga core you loose the joystick, keyboard, ports of the c64.

Wich is quite interesting it can emulate the 6510 fast.

It has two cores for the moment. A c64 core and an “Pamiga” core.

Once you load the “Pamiga” core it acts as an minimig. There is one downside once you start minimig core joystick ports at the C64 are lost.

Therefore they have a small docking station developed that features 4 db9 ports. It is available at Amigakit for the moment.

Probably there will be more to come..

When it is plugged in the C64 it enhances the c64 and emulates an 1541. I never need one but a REU is in the list. There is a lot possible, but what is great to hook it up to vga monitor, and to use an emulated 1541 on an SD card. CRT or cartridge can be loaded wich is handy. It features Georam as well.

Final words: It is clearly a Beta product looking at the software emulation part, but it has a lot to offer already. If you are serious about a C64 and the Amiga this product is worth every eu.. If you expect to run every title, forget it at the moment some C64 titles do not run in stand alone mode, and the Amiga mode has bugs. Nevertheless I am very happy about this promising product. I think this is one of the best releases in 2011. ** Please note that I am a critical user wich tested a lot of different software… your mileage plugged in into the c64 might be a lot better **

Please visit the Syntiac Pages/Turbo Chameleon for more detailed in-depth documentation on the Turbo Chameleon 64 cartridge. There’s also a mailing list for betatesters with first-hand information.

Features taken from there website:

• VIC-II screen duplication on VGA through intelligent bus snooping techniques
• Cycle accurate REU memory expansion emulation (upto 16 Mbyte)
• Cycle accurate geoRAM emulation (upto 4 Mbyte)
• MMU allowing access to all of the 32 Mbyte SDRAM using 4 KByte blocks.
• Turbo function with full 6510 emulation (illegal opcodes)
• MMC/SD slot (software compatible with MMC64)
• Cartridge emulator with freezer logic. ROMs can be stored in onboard flash or read from MMC card (as .crt or binary files). Emulation of the following utility and game cartridges:
o 8 or 16 KByte (EP)ROM cartridges
o Simons Basic
o Ocean type 1
o FunPlay
o Super Games
o Epyx Fastload
o Westermann Learning
o C64 Game System (system 3)
o Warpspeed
o Dinamic
o Zaxxon
o Magic Desk
o Comal-80
o Ross
o Mikro Assembler
o StarDos
o EasyFlash
o Prophet-64
o Mach-5
o PageFox
o Business Basic (S’More)
Emulation of the following freezer cartridges:
o Action Replay
o RetroReplay
o Final Cartridge 3
o Expert Cartridge
o KCS Power Cartridge
o SuperSnapshot 5
o Capture
• diskdrive emulation (1541 compatible, so fastloaders/speeders will work)
• PS/2 keyboard connector with joystick emulation on numeric keypad (for C64-tower projects)
• PS/2 mouse connector with emulation of a 1351 mouse (GEOS compatible)
• Infrared (IR) receiver compatible with an Amiga CDTV remote.
• Clockport connector (designed for optional RR-net board)
• 16 MBytes of user writable flash rom for firmware updates and storage of custom roms
• 8 bit microcontroller with USB for startup control, firmware upgrades and debugging
When in standalone mode:
• Cartridge is powered through a USB cable (5 volt)
• Cycle accurate emulation of the two CIA chips
• Cycle accurate emulation of the VIC-II video chip
• Stereo SID chip emulation (at 1 Mhz sample rate, very clean sound with no aliasing!)

C64 powered by C128 psu

Commodore 64 Posted on Wed, December 07, 2011 13:13:34

Commodore c 128 power brick for commodore 64

Well, I do not trust the C64 PSU a single bit. It outputs to much on the 5 volt line, and if you ask me it was designed with 220V in mind not 240V. This issue seems not to apply to USA users.

Anyhow, there have been reports in the past, that there is failure caused by bad PSU.

Old mem chips designed for 5 V working on higher voltages, not a good idea.

Since I had this much heavier C128 CPU in bad shape, I decided to hack it ready for the C64. Here are a few pics.

I started with a paint job, the reason is obvious, then soldered the wires to the back and added an old psu lead.

Please remember to messure the voltages with a multimeter. Any mistake will kill your equipent very fast.

Amiga computer Enable USB at early BOOT

Amiga Classic Posted on Wed, December 07, 2011 09:31:48

I decided to write a small picstory on how to boot from USB using DENEB, so after installation no usage of a real hard disk or floppy to load usb, so basically put USB stack Poseidon in deneb rom. So my A4000 boots from usb stick by now, without repercussions.

This method also enables usb in games, making an USB mouse a full amiga mouse, exept for early boot before usb is loaded. You can still get in early boot after the modules are loaded 🙂

It is very easy, but I did not find info in google. Although Mfilos gave some info away in his usb os 3.9 boot rom projects, he also added some usefull info by PM, and I also found some stuff out by just testing.

I hope you enjoy this, and I started with a proper installation of the Deneb.

That is:

Install Workbench. 3.X
(you need to unpack files)
put Installer in C. (might be needed in Utilities as well)
Install Mui38 .. Needed by at least trident.

Install latest Poseidon and Luceferin, probably the version you got in rom on the deneb is old. I bought my deneb about a year ago, so I have older software in it. (software download)

You could run Poseidon and install and load it at bootup, but enabling eg putting it to active can be done later through this rom method. So I installed poseidon without adding it active to startup-sequence. (the software asks that)

So start Luceferin.

An empty upload list:

Normally there was some stuff in the DENEB rom, but I cleared the list and that intro by using upload without adding anything, since that means clearing rom.

There is a menu option that put files ready to enable usb at in the deneb rom.. If you click Poseidon usb at the top of the screen it puts all modules in rom. A little bit further on here is also wich files that you really need.

Voila everything in, I also added the 040-060 libs it enables wb3.1 floppy boot and some other libs suggested in boing bag 3 for amiga os 3.9 after installation of the bag. You could do the same, but that is for you to play.

I used the no rom jumper in the past to skip rom, after wrong rom modules, but this means that in this situation you need to keep a real hard disk at hand to reconfigure. Maybe a flop is enough with luceferin, not tested yet. There seem to be other options at bootloader TAB.

Please do not forget to press upload when you think you have every file in. Otherwise the deneb rom will not be changed.

A more Spartan method, noted by Mfilos would be to only include these files:

Then the only thing you need in Deneb’s Flash are the following files:
– denebdmausb.device
– hub.class
– massstorage.class
– poseidon.library
– PSDStackLoader (this must be the one you’re using now and works)

After that I rebooted with workbench 3.1 floppy and install 3.1 it appeared to boot, even I have an 060-ppc system one of those flops should not boot, and even my usb mouse was working, so this clearly enables usb. USB stick was not working since no FAT95 loaded.

Then the bells started ringing, or so to speak, it came to me how to use an usb stick as hard disk:

I started back from main ide disk and started hdtoolbox 3.9:

This image has been resized. Click this bar to view the full image. The original image is sized 800×328.

Yes and there is usbscsi.device.

You should install the drive like any other drive by selecting install, read the values out, and after that partition it. This is how it looks after install:

All the rest is really basic adding a new hard disk to an amiga stuff. On Amiga you can just copy old system to new system partition just like that!

One thing, on my amiga if I ask early boot to early I get this:

(that is no devices, after I removed IDE and SCSI devices)

If I ask for early boot and press mouse buttons down right after a green screen I get the usbscsi device nicely listed.

Since I copied and formatted the usb stick just like any amiga disk, it boots and works just like any other amiga ide-scsi disk.

Only I need to remember to include every reflash Poseidon in rom. Probably If I can find out wich files to put in rom for fat95 it should enable fat usb stick at basic workbench 3.1 boot floppy as well.

So our “classic” amiga bigboxes have full usb boot support !

Please master adding an extra hard disk to an amiga bigbox, for missing info, and do remember boot priority to configure it properly.

I think this is more easy then booting windows XP from usb stick!