Commodore Amiga 500 Keyboards Join & Fix.

Unfortunately from five keyboards i have made only one in a good shape and full working.

Commodore Amiga 500/600 PSU Repair

Amiga 500/600 (PSU) PowerSupply #1

Defect:

• Short-circuit and the fuse blows.

Replace parts:

• 1 x Transistor NPN 2SC3679.

Amiga 500/600 (PSU) PowerSupply #2

Defect:

• Short-circuit and the fuse blows.

Replace parts:

• 1 x Transistor NPN BU508A.

Amiga 500/600 (PSU) PowerSupply #3

Defect:

• Short-circuit and the fuse blows.
• The PCB is half broken.
• Some components have suffered of too much heat.
• The locking pins of the cover are broken.
• Dirty and Yellowed.

I don’t made the repair. I recovered what might come in handy.

Gallery:

The Gotek is a USB Floppy Drive emulator very cheap, you can buy it from eBay at €24.00 €20.00 including the shipping cost.

Let’s start by saying that this Floppy Disk Emulator with the original firmware is totally useless for our purpose, like to connect it to an Amiga and in the near future to a Atari ST or Amstrad CPC. The new firmware written by Herve Messinger replaces the original firmware, to do this you need a simple converter from USB to TTL Serial Interface to program the STM32 ARM Cortex MCU.

I would add this thing; this Floppy Drive Emulator is not absolutely comparable to the HXC Floppy Emulator of Jean-François DEL NERO (Jeff) where in addition to supporting dozens of Floppy Formats/Hardware and the Firmware is in development from several years but it’s a nice and inexpensive alternative.

For more information, firmware and programming tool you need to go here the official blog of Herve Messinger.

Video:

source: cortexamigafloppydrive.wordpress.com

Apple IIc Rom v4 Upgrade & Repair.

Defect:

• The second RAM in the auxiliary memory is faulty.

Replaced parts:

• Replaced 1 x RAM 4264 (ARD1)

Upgrade:

• Apple IIc ROM upgraded to the latest version V4 (MON)

Download:

• Apple IIc v4 ROM + Installation Manual (1697)

CBM prg Studio Version 3.0.0 is released. There are a lot of new features in this version. I’d really appreciate it if you report any bugs you find or have any suggestions/comments.

CBM prg Studio allows you to type a BASIC or Machine Code program in using a nice Windows environment and convert it to a ‘.prg’ file which you can run on an emulator, or even a real C64 / VIC20 or PET if you’re feeling brave and have the right kit.

CBM prg Studio is the result of merging C64PrgGen and VIC20PrgGen. Adding new features and fixing bugs in two apps which were 95% similar was a bit of a nightmare so merging them made sense.

It was also a good opportunity for a face lift and to add some new features, such as:

• Programs are project based, meaning all related source files, sprite files etc. are kept in one place and multiple source files can be linked more easily.
• Tabbed MDI.
• Syntax highlighting.

What CBM prg Studio isn’t is a front-end for tok64, cbmcnvrt, bastext or any other tokeniser / detokeniser / assembler. It’s all been written completely from scratch.

New features:

• 65816 assembler/debugger.
• Partial support for the VICE debugger.
• Bitmap import/export for character editor.
• Binary file import to Assembly source.
• Line and rectangle drawing tools for the screen designer.
• TASM support added to Source Converter tool.

Bug Fixed:

• Assembler:
  • Using arithmetic with cheap labels would fail.
  • Slow incbin performance for large binary files.
  • Wrong SYScall generation for C128 projects.
  • incbin with screen data imported all screens.
  • Assembling past the end of memory not detected properly.
  • Invalid branch not detected properly.
  • Arithmetic on WORDs not carried out.
  • Multiple characters in single quotes in BYTE sequences not assembled properly.
  • GenerateTo only created .prg files.
  • Save File As… would only save .bas files.
  • Comment tool would not comment out already commented code.
  • Incbin reporting ‘file too large’ error by mistake.
• Screen Designer:
  • Binary file export
  • Colour selection for C16 projects didn’t work.
  • Wrong screen size saving C128 screens.
  • Character set selection corrected.
• General:
  • Some code reformatting issues.

Download: CBM prg Studio v3.0.0 (1385)

source: ajordison.co.uk