I thank a friend for the donation.

Donated item:

• Homebrew RTTY demodulator for Commodore 64.
• Software and Documentations.

I thank Fabio Bovelacci (Frater Sinister) for the donation.

Donated item:

• Commodore Amiga 500 with PSU, Mouse, Manual.
• GVP HC+8 Series II for Amiga 2000/3000/4000.
• Compatible 512k Memory Expansion for Commodore Amiga 500
• Psion Organiser II with Serial Cable.
• Sharp – EL-6200 Organiser
• Motorola FPU 68882RC50 50MHZ

I thank a friend for the donation.

Donated item:

• Fenner MX-66 (Monochromatic Monitor)
  • The Mx-66 was a green phosphor CRT-based monochrome monitor manufactured in Italy by Fenner.

Thanks go to: Damiano (manosoft) and my Brother Alessandro.

Things that have been donated:

• 4 x Box of Verbatim Datalife 3.5  2HD Floppy Disk.
• 1 x Apple Keyboard for my iMac G3 “Bondi Blue” M5521
• 1 x Iomega Zip Drive SCSI + Cable.
• 1 x Iomega Zip Drive USB + Cable.
• 11 x Zip Disk.
• Some 3.5 Floppy Disk.

I thank a friend for the donation.

Donated item:

• Sandy Sinclair QL  Printer Converter.
  • The Sandy Printer Converter was a serial to parallel printer interface made by Sandy (UK).

I thank a friend for the donation.

Donated items:

• Hardital (Italy) Bang 2082.
  • This is a Accelerator expansion for Amiga 500/2000 with a 68020 @ 14.3 MHz (synchronous) and a optional FPU up to 68882 @ 25 MHz (asynchronous).

• Logica (Italy) Kick Mouse.
  • Kickstart Switcher 2.0

Today a friend, that i thank him immensely, gave me a large amount of chips.

The donation amounts to:

• 70+ Z80 CPU.
• 14+ Z80 CTC (Counter / Timer Channels)
• 200+ 74XXX TTL chips.

Autopsy:

12►

Donated By: Andrea Pierdomenico

from The Personal Computer Museum:

The PowerPad is Chalkboard’s graphics tablet. With its combination of features, reasonable price, friendly support, and wide range of software, it would be an excellent addition to your hardware.

The first thing you notice about the PowerPad is that it’s big: it measures 17 inches by 14 inches, with a drawing surface 12 inches square. It is easier to draw on than the smaller surfaces of other tablets.

The PowerPad uses 14,400 tiny digital switches to read where pressure is applied to the pad. There are 10 x 10 per inch. Unlike the surfaces of other pads, the PowerPad has no problem resolving simultaneous multiple inputs. This ability allows the PowerPad to be used as much more than just a graphics tablet: it becomes a flexible input device.

If you’ve done a little arithmetic, you may be wondering about the PowerPad’s resolution. Ten switches per inch by 12 inches equals 120 points, or pixels – not even as high resolutions as Graphics 7! However, it’s possible to design a program using the Atari’s highest-resolution screen, by “software stretching” of the resolution.

The version of Micro Illustrator ($49.45) for the PowerPad has a special feature called “Scale” that uses ,Software stretching” to let you draw pixel by pixel, even though the tablet’s resolution isn’t as high as Micro Illustrator’s.

Hardware isn’t of much use without software, but the PowerPad doesn’t come with any. However, Chalkboard offers several programs in cartridges requiring 32K of RAM for the Commodore VIC-20.

source: pcmuseum.ca

Autopsy:

Donated By: Andrea Pierdomenico

from Wikipedia:

Commodore’s RAM Expansion Unit (REU) range of external RAM add-ons for their Commodore 64/128 home computers was announced at the same time as the C128. The REUs came in three models, initially the 1700 (128 KB) and 1750 (512 kB), and later the 1764 (256 kB, for the C64).

Although the C128 could access more than 64 kB of RAM through bank switching, the memory inside the REU could only be accessed by memory-transfers (STORE/LOAD/SWAP/COMPAREs) between the main memory and the REU memory, thus, giving an equivalent to a (slow) small memory window. Additionally, the C128′s built-in BASIC 7.0 had three statements, STASH,FETCH, and SWAP, for storing and retrieving data from the REU.

Officially, only the 1700 and 1750 were supported on the C128. The 256 kB model, the 1764, was released for the C64 at the same time. However, aside from a bundled 2.5 ampere C64 power supply unit (the factory unit could not support the 1764), there were only minor differences between the three models.

In practice, the difference between the 1764 and the earlier units had little effect on compatibility, and people used 1700s and 1750s successfully with the C64, and 1764s successfully with the C128, although the C64′s stock power supply was inadequate to reliably handle the power load of any of them. Some dealers unbundled the 1764 and the power supply in order to sell the power supply to C64 users, and/or upgrade the 1764 to 512 kB.

Because of memory chip shortages in the late 1980s, the 1750 was only produced in small quantities. However it was not difficult to upgrade a 1700 or 1764 to 512 kB. Several firms did this commercially, either selling upgraded units or upgrading customer-supplied units.

In the early 1990s, DIY modification schemes to increase the capacity of an REU to one megabyte or higher appeared on various online services.

source: wikipedia

Autopsy:

1234►

Donated By: Andrea Pierdomenico

Mini Floppy Disk Drive for the Sharp PC-5000 (compatible MZ-800 through the interface MZ-1E05)

The Sharp Mini Floppy Disk Drive CE-510F is a double-density, double-sided 5 1/4 unit with a capacity of 320K per disk. The drive, of course, must be operated with AC power and is not portable.

The Sharp MZ-1E05 Interface is a Floppy Disk Card for MZ-700/MZ-800.

Download:

• Sharp MZ-1E05 Service Manual (1745)

Sharp MZ-800 Booting Disk Basic from Floppy Disk Drive:

I thank my dear friend for the donation of the Cartridges for Commodore VIC-20.

I thank my dear friend for the donation of the BASIC cartridge for my Sega SC-3000.

I thank my dear friend for the donation of the motherboards.

• Commodore Dual Drive Floppy Disk CBM 8250
• Commodore CBM 8296

Material donated:

• Commodore VC-1541 (need to fix it)
• Microcomputer Data Recorder Klain for Commodore 64/VIC20/PET.
• Some IC.

Thanks Alessio for the donation.