Protected: Collection of Vintage Calculators by Fabio Frascati
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Author Archives: Amedeo Valoroso
Original Competition Pro joystick restoration
In this article I show how I restored an original Competition Pro joystick (dated November 1990), starting from a dirty specimen with some directions not working, up to the final test on a Commodore 64 with dedicated software. The joystick does not […]
Repair of GameBoy monitor lines
Does your GameBoy monitor have vertical lines? Here's how to fix the problem. In this article, we talk about repairing lines on the GameBoy monitor (Nintendo Game Boy Classic, DMG-01). Let's see, step by step, the opening of the console, the diagnosis [...]
Replacing screwdriver batteries
Here is the step-by-step procedure for replacing the battery pack of a drill driver, originally equipped with Ni-Cd cells, converting it to lithium ion (Li-Ion) batteries. I illustrate all the steps performed, the technical choices adopted and any […]
Christmas program for Commodore 64
Christmas program in BASIC: flashing Christmas tree on the C64 For this Christmas 2025 I decided to give a small gift to all retrocomputing enthusiasts: a Christmas program for Commodore 64, in BASIC v2, which draws […]
3 Nintendo Game Boy TEST!
In this Video of Retro Gaming we test three Nintendo Game Boy console, purchased in Lotto together with some video games and accessories. After rearranging the boxes and cartridges, the time has come to check the status of [...]
Testing 14 vintage laptops!
How boring! In the video posted on @ValorosoIT, I tried to power up 14 vintage laptops from the '80s, '90s, and 2000s - received as gifts or purchased in various lots. The goal is simple (but lengthy): to see if they start, what operating system […]
Double interview on the Sinclair Spectrum
Welcome to Valorosoit, the channel and blog dedicated to the world of vintage computers, vintage electronics and, of course, to our beloved retrocomputer. Today's topic? A double interview with two great fans and experts from the world Sinclair Spectrum: Davide Barlotti and [...]
Vintage Computer Donation
A donation of vintage computers is always a special event for those who, like me, collect, repair and document the history of computing. Each component has not only a technical and historical value, but also an emotional one. In this case, the donation is [...]
AI Images, LLM, ChatGPT
During the Varese Retrocomputing 2024, an increasingly richer fair of not only vintage but also current content, I had the pleasure of interviewing Michele Petino, who professionally deals with 3D modeling, rendering, virtual tours and lessons on the implementation of AI [...]
Dallas DS 1287 Modification: External Battery
Do you have an old IBM computer, maybe a PS/2 Model 30 or another machine from the late 80s or early 90s, that no longer maintains the BIOS configuration? Do you end up with errors 161, 162, and 163 when I start up? […]
Commodore 1702
Produced by JVC for Commodore, the CRT Commodore 1702 monitor is the perfect combination for back computer such as Commodore 64, VIC-20, C128, C16, C116 and Plus/4. I finally managed to add it to my collection thanks […]
BBS in the 80s and 90s
Do you remember BBS? If you're a fan of retrocomputing, you've probably heard of Bulletin Board Systems (BBS). Before the spread of the internet, these digital networks allowed users to communicate, exchange files, and even play online games. At Varese Retrocomputing [...]
Retro Gaming with Amiga Vault
In my blog and in my social channels @ValorosoIT, I explore the world of vintage computers with curiosity and passion. Today I want to talk about Amiga Vault, an exclusive service created by Fabry and designed for Commodore Amiga enthusiasts. Amiga [...]
Cosmac ELF
On our journey through time, Davide Calvi accompanies us of the videogame retroedicola association, better known as Dr. Fix, who tells us unique details and anecdotes on the Cosmac Elf. The computer showing us Davide Dr. Fix is a reply [...]
Modern accessories for Commodore
During Varese RetroComputing 2024, I had the pleasure of interviewing Simone Nasa and William, who presented a range of modern accessories for the legendary Commodore 64, Vic-20 and Amiga. These accessories, designed to improve performance and simplify [...]
Facit CM2-16
Facit cm2-16 is a mechanical calculator produced by Facit AB, a Swedish company from åtvidaberg specialized in calculation tools and office machines. This specific specimen, which I have in the collection, has the number of 888731 series and an indicating label [...]
🎄✨ Merry Christmas and Happy Holidays! ✨🎄
Thank you all for your continued support and for being part of this amazing community: 📈 4500 subscribers on YouTube, 5700 followers on Instagram, 4700 members in the Facebook group, 3900 on TikTok and 2500 on Threads! 🙌We are over 20,000 passionate [...]
Sound Blaster Clone by David E Larsson
The Sound Blaster Clone sound cards, made by David E Larsson in Sweden, are replicas of the original Sound Blaster sound cards, with some improvements geared towards compatibility and sound quality. In this article, we analyze in detail the two [...]
C64 FUN-NEST: retro innovation
In the world of retrocomputing, modern interfaces and innovations allow us to breathe new life into our beloved vintage computers. During Varese RetroComputing 2024, a reference event for fans of historical technologies, I interviewed Lorenzo Bolla, creator of the [...]
Steve Jobs' revolution
At Varese Retrocomputing 2024, an event dedicated to vintage technology enthusiasts, I had the honor of interviewing Sergio Gervasini of ESoCoP. In this fascinating conversation, Sergio takes us through the history of Steve Jobs' most representative computers, exploring the technological evolution [...]
Ghostbusters and 80s computers
In the world of retrogaming, Ghostbusters is one of the few video games that I enjoyed a lot as a child. The game was inspired by the famous 1984 movie. In this exclusive video interview for the ValorosoIT channel, recorded at Varese Retrocomputing 2024, [...]
Historybit – Stories of Computers 2024
In today's video, I take you with me to the Historybit exhibition - Computer stories, organized by Davide and Alberto Fornasiero of the FBP study in Cerro Maggiore. It is an unmissable opportunity to explore the evolution of technology through an extraordinary collection of [...]
Commodore PET CBM 8032 keyboard repair
I had purchased this Commodore PET (Personal Electronic Transactor) CBM 8032, in the United States, and it had arrived in my collection at the end of 2021. This 8-bit computer, produced in the early 80s, had caught my attention for the [...]
Arcade cabinets and JAMMA boards
The arcade (or coin-ops, "operated in money", as they are often called) have marked an era. From the 70s until the early 90s, these entertainment giants dominated the games rooms, bars and fairs, offering unique videogame experiences that [...]
Commodore and Amiga: a journey from the '70s to the '90s
Welcome to Valorosoit! 🎉 Today I invite you to undertake, with me, a real journey through time, exploring the thematic path that I have set up, mainly dedicated to the history of the electronic devices Commodore. It starts from the 70s, to arrive […]
DEC Rainbow 100, PDP-11 and Professional 380
At Varese Retrocomputing 2024, I had the pleasure of meeting Nicola Avanzi of RetroCampus, a retrocomputing enthusiast and expert. On this occasion, Nicola showed us three historic models of the Digital Equipment Corporation (DEC): the DEC Rainbow 100, the [...]
Assembly for MOS 65XX Processors
The book Introduction to 8-bit Assembly Programming – Volume I: MCS 65XX is a fundamental guide for those who want to learn Assembly programming for MOS 65XX processors. Written by Daniele Lanzillo, also known as M.A.W. 1968 (András [...]
Varese Retrocomputing 2024
The Varese Retrocomputing 2024 is upon us! The event will be held on September 15 in Tradate, in the province of Varese, at the historic Villa Truffini, located in Corso Paolo Bernacchi 2. The opening hours to the public will be from 10:00 to 17:00. [...]
XT-CF Lite v4.1, installation and test
If you are a retro-computing enthusiast, you will surely have encountered the problem of damaged mechanical hard disks in old computers. Or, as in my case, an old compatible IBM PC that is not equipped with hard disk. Fortunately, there is a [...]