Brian H
  • Member for 4 years, 11 months
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Where to buy a 6502 chip
26 votes

You are in luck. The latest version of the 6502 is still manufactured and sold. You need to search for it by the official manufacturer's product code "W65C02S6TPG-14". Western Design Center (that ...

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How do C64 cartridges swap running programs without losing state and context?
Accepted answer
25 votes

There isn't any actual "swapping" of code running in the C64's main memory. Rather, it is an instantaneous switch in whether the code is running from the main memory of from the cartridge memory. ...

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HDD data recovery advice
1 votes

If you are mainly concerned about successfully recovering the data, then the safest route is to hand it over to a trustworthy data recovery professional. They will have more knowledge and tools at ...

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Connect Ethernet via Parallel or Serial in old laptop
11 votes

Since it's a pretty early laptop without a PCMCIA port, there won't be a way to add an Ethernet port. Your best approach is to use the serial port to connect via null-modem cable to a modern machine ...

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What languages are better fit for generating efficient code for 8-bit CPU's than C?
55 votes

One language that was popular on early 8-bit micros, including those that used the 6502 CPU, was Forth. Forth is exceptionally good for this use case, and superior to a C compiler, because Forth can ...

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What exactly was the Amiga Ranger?
28 votes

Ranger was to be the next generation Amiga, which the original West Coast Amiga engineers began working on in 1986-87, following the release of the Amiga 1000. Jay Miner improved the graphics chipset ...

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What exactly has the windows OS relationship been towards MS server offerings?
5 votes

Background: Windows NT was the basis for all Microsoft Windows "Server" Operating Systems that had that name. Previous iterations of MS networking products were mostly add-on device drivers for simple ...

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How exactly did Windows become the OS of the home PC?
32 votes

The other answers include a lot of sound historical information about how Windows evolved into its dominant role on PC's in both the home and business environment. But I think the most fundamental, ...

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Why did the original design of COM on Windows rely on the Registry?
10 votes

Microsoft's COM library storage was a poor use-case, and an even poorer implementation, of what was all the rage in academic computing research around that time - Object Storage. As you have noted, it ...

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Price of original Apple ][ in 1980?
Accepted answer
4 votes

Using the many helpful comments given, and reviewing dealer pricing of the Apple II and II Plus in old issues of Byte magazine from 1979/80, I've come up with what I think is a reasonable explanation ...

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Why did Socket 3 have more pins than needed for the 486?
8 votes

Socket 3 did not have more pins than needed. It was designed to support the Pentium OverDrive CPUs that Intel released in the mid-1990s. These CPUs could have up to 237 pins, while the Socket 3 ...

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How can I link a BASIC program with BASIC 3.5 for C64?
Accepted answer
7 votes

Simple way: Load the BASIC 3.5 extension and RUN it. Load your BASIC program. Use a cartridge freezer to create a snapshot of the memory that can be re-loaded on cold boot. There are many cartridge ...

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How Amiga A590 autoboot ROM and bootable floppy disk works?
Accepted answer
14 votes

In order to autoboot any Amiga hard disk, 3 things are needed. A version of Kickstart that supports boot from HD. This means >= Kickstart 1.3. A device driver that knows how to speak to the HD ...

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Why did the Commodore PET 2001 take so long to ship?
10 votes

This was the standard fare for Commodore's computer division under Jack Tramiel. Tramiel was famous for setting very aggressive timelines for engineering to deliver prototype machines, usually to be ...

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Why did 8-bit computers choose BASIC dialects as "de facto" command-line interface, instead of contemporary Shell/Lisp dialects?
19 votes

This was more of a marketing question than a technical one. The historical fact is that most vendors of 8-bit personal computers chose to include BASIC. The simple answer as to why they made this ...

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Is there any use for PC Magazine issues from the 1990s?
9 votes

The issues you have are most likely neither rare nor valuable. But they could be, given the right collector. A simple approach is to offer the lot in an eBay auction starting at $1. Most of these ...

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Why were most PCs and electronics beige back in the day?
34 votes

The choice of beige for the plastic cases used on popular 1980s retrocomputers was not arbitrary. As a color for a popular, mass-market, personal computer, it originated with the Apple ][, where it ...

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Is the ZX Spectrum multithread capable?
8 votes

All of the popular, early 8-bit CPU's support hardware and software interrupts. Therefore, they can all theoretically support preemptive multitasking, which I think is what this question is really ...

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Does the "Amiga Client for Novell NetWare" exist?
Accepted answer
32 votes

The "Amiga Client Software for Novell Netware v1.4" (official name) was created in 1992 by Oxxi. It is available as a set of six(6) floppy disk images most places where Amiga abandon-ware is found. ...

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Was the Commodore 128 movable zero page / stack and second block of color RAM actually used?
Accepted answer
9 votes

According to COMPUTE!'s, Mapping the Commodore 128, the C128 BASIC firmware makes use of the two color RAM banks to support the "split-screen" graphics modes. Normally,the 128 uses one block (...

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How does ProDOS allow for multiple volumes to exist on a single device?
Accepted answer
9 votes

Update As of the release of ProDOS 2.5 alpha#5, up to 37 drives are supported. This is done by increasing the number of mapped drives per slot from 2 to 8, which would theoretically allow 56 drives. ...

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Is there any code in Firefox (as of 2020) that comes from Netscape Navigator?
17 votes

Firefox has seen a great deal of development over the last 22 years, both in maintaining the original code and in re-writing large portions. Currently, much of Firefox is being converted from C++ to ...

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Printing on the graphics screen with lowercase/uppercase letters using CHAR command in Commodore BASIC 7.0
Accepted answer
4 votes

The normal method of changing between the uppercase/graphics character set and the lowercase character set on the Commdore 128 is by printing the control characters, like so: PRINT CHR$(142):REM ...

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Imaging a HDD from DOS over Serial
Accepted answer
13 votes

You seem to be proposing a custom HDD "driver" that would image the HDD block-by-block by sending those blocks across a serial port to some sort of process running on your modern computer that ...

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What 8-bit microcomputer systems multiplexed multiple physical ports on a single controller?
1 votes

I think the canonical example from the 16-bit era is the two ports on the Macintosh provided by a single Zilog 8530 and able to be used for serial, printer, modem, and AppleTalk networking based on ...

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How was a line of Commodore 64 BASIC code stored in its memory?
Accepted answer
18 votes

Trust Vice. The information you obtained elsewhere is incorrect. Each line of the BASIC program is preceded by a pointer to the next line. Then, comes the line number. Following this is the tokens ...

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Why didn't Apple sue Commodore over the Amiga's GUI?
36 votes

While some lawyers do occasionally file lawsuits based mainly on their targets having "deep pockets", like Microsoft had, this is not generally successful. In order for a typical corporate lawsuit to ...

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Why was the Kickstart 1.x "Insert floppy" graphic so bad?
61 votes

The limitation is based on saving precious space on the 8 KiB boot ROM for the Amiga 1000. Before the "Insert Workbench" graphic ever graced an original Amiga 1000 from 1985, a user would first have ...

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What options were available for having an Amiga 1000 not be dependent on a KickStart disk?
12 votes

TL;DR You will need to open up the machine to see exactly what kind of Kickstart ROM upgrade is installed. As you are probably aware, the disk-based Kickstart boot floppy was not part of the original ...

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Static memory partitioning
4 votes

During the heyday of the Intel 80386, there were many operating systems that relied on that CPU's virtual 8086 mode to multitask programs that were written for x86 real-mode. By allowing real-mode ...

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