tofro
  • Member for 5 years, 7 months
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Which memory management is easiest to program - CoCo 3 or C128/Apple //e?
10 votes

Neither CoCo nor Retro-Apples are my specific area of expertise - I'll try to answer from a more European viewpoint. Concepts and technical solutions are similar, however. Basically, all the ...

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When or should we expect our 8-bit motherboards to fail due to the capacitors?
10 votes

This clearly needs a "depends" answer. There are known places where I wouldn't even dare to switch on a computer without replacing caps first - The Sinclair ZX Spectrum series is such a candidate - ...

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Can input lag be modeled as a function of controller cable length for SNES?
Accepted answer
9 votes

The possible signal lag introduced due to pure cable length is definitely negligible due to the signals travelling at (close to, for any practical purposes) the speed of light through the cable. What ...

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What was the first microcomputer capable of working with Japanese kanji?
9 votes

You didn't mention the MPF-II's release: That was, apparently, 1982. There were earlier Japanese Microcomputers than that, notably the NEC PC-8000 series (released in 1979) that used a Katakana/Kanji ...

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Sinclair's microdrive -- was it based on compact cassette technologies?
9 votes

The tape was actually the same quality as used for VCR tape - according to the QL Service manual "high-quality video tape" was used. Other than the rotating heads in VCRs, however, Sinclair ...

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Saving screen pixels to string in ZX Basic
Accepted answer
9 votes

Did you, by any chance, use Beta Basic for the Spectrum? There you could assign memory ranges to strings and vice versa like 10 REM Move memory to a string 20 LET a$=MEMORY$()(16384 TO 22527) 30 REM ...

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Simplest system to create an emulator for
9 votes

A simple, straightforward computer like the ZX Spectrum sounds reasonable - But there are simply too many good emulators around already to make this a useful option. I also think the 6502 is more easy ...

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Cassettes that used stereo?
9 votes

So that got me thinking... did anyone use the second channel for storage? Well yes, everyone - They simply used the same signals for both channels. But that was obviously not your question. You ...

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What was the equivalent of "America Online" (AOL) outside America?
9 votes

Can only speak for myself: I never wanted the limited, cut-down internet access provided by AOL or my national telco. IBM offered the first "real", non-proprietary internet access as a package with ...

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Did Cray computers use virtual memory?
9 votes

The book Super Computers, by V. Rajaraman (of 1999) says Cray computers, however, never provided a virtual memory system, as Cray designers were convinced that the virtual memory's disadvantages ...

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Why did tactile-feedback keyboards lose popularity?
9 votes

The original IBM Model M keyboard can still be bought. It is produced by the original manufacturer Unicomp, a management-buyout (I believe) from former IBM Lexmark. Their keyboards are within the $100 ...

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Is there a device that connects to a USB port and acts like a normal PC floppy drive?
9 votes

I don't think anyone sells something like that in one piece. There are, however, components on the market that should allow you to build that from scratch: A GoTek or HxC that behaves like a "real" ...

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Why were the /\ (min) and the \/ (max) operators abandoned in the C language?
9 votes

Assuming these operators were part of "original C" (I don't think so, see some comments): The main reason why these weren't followed up would probably be: C being what it is - a close-to-the-machine ...

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Converting SCART to VGA/Jack
9 votes

Black-and-white hi-res from the 1040 STE on a VGA monitor should work with a direct connection and no tricky electronics at all (just the adapter cable) Atari VGA GND ...

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BYTE Magazine outside the U.S
8 votes

BYTE used to be available at well-sorted newsagents all over Europe (I can confirm UK, Germany, France, Italy and Spain at least) starting from the late 80s. I don't really remember a European or ...

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The Slowest Microprocessor
8 votes

Not the slowest in clock speeds (a whopping 1MHz), but probably the simplest and slowest in raw performance of its time may be the Motorola MC14500 CPU - It only has a 1-bit data bus and only 16 ...

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CRT Mitsubishi Diamond Pro 1000 black screen: flashes BIOS logo during boot, but otherwise black
Accepted answer
8 votes

In the following I'm assuming you don't have the manual brightness control turned down to the minimum. That is the only trivial problem that might cause the issue. When the CRT isn't even able to ...

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Is the 3000T's case made by Commodore, or was it stock from elsewhere?
Accepted answer
8 votes

The case of the Amiga 3000T was actually modified from the Commodore PC-60 III (their top-range PC). I doubt, however, that this makes it an easier find. Those monsters are sought after as well, ...

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How do you program Babbage's Difference Engine?
8 votes

Not at all. The Difference Engine is not what we would call a programmable device. (So, it would also be considered off-topic for this site). It's more a slide rule than a computer. The polynomal ...

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What ways are there to "PEEK" of memory sections in (different) BASIC(s)?
8 votes

ZX Spectrum Beta Basic MEMORY$ is a pseudo-variable that considers the whole 64k of memory a string. By slicing it (Sinclair's way of implementing LEFT$, RIGHT$,...) you can pick memory areas into ...

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Were any external disk drives stacked vertically?
8 votes

I don't think your claim that never happened is generally true It makes a lot of sense to put drives side by side when you want to place the drive set between computer and CRT (like many Apple users ...

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Have programming languages driven hardware development?
8 votes

Yes, definitely. A very good example is how Motorola moved from the 68k architecture to the (somewhat) compatible ColdFire range of CPUs. (It is also an example of how such an evolution might go wrong,...

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Daisy wheel graphics using the period?
8 votes

I used to have a Diablo 630 DWP saved from the dump. This did produce nice graphics using a dot character and micro spacing together with my AT compatible of that time. The whole procedure was, ...

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Can a Harlequin ZX Spectrum clone be modifed to run CP/M?
8 votes

The hardware modifications are possible, and actually already done. The "SuperFoo Harlequin 128" is an all-RAM design based on the original Harlequin that should be capable of running CP/M (Just like ...

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Do all Econet devices need the same clock speed?
8 votes

In Econet, using synchronous serial transmission, the sender provides the clock together with the data. The receivers need to synchronize with that clock. And the network clock doesn't (necessarily, ...

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CP/M in less than 80 columns
8 votes

CP/M plus works nicely on a ZX Spectrum +3 in the following terminal modes (it emulates a DEC VT52 Terminal in CP/M Plus using its very limited screen resolution) Mode 0: 24 x 32 screen (23 x 32 if ...

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Where to buy an 8 bit computer remake?
8 votes

There are lots of 8-bit remakes in the market. Assuming you want an exact copy, the choice of makes gets smaller and smaller, if you want something that is ready to use out of the box and a complete ...

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Can the wrong sync frequency really destroy a CRT monitor?
8 votes

Magnetic coils (the coils that magnetically deflect the electron beam in a CRT) have an electric resistance which is a direct function of the frequency of the current flow. If that resistance is ...

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How were files transferred between different systems in the late 1980s?
8 votes

I transferred a lot of text documents and spreadsheets/databases from my ZX Spectrum to my Sinclair QL using the Sinclair network, a 80kBps serial network that was inbuilt into the QL and provided by ...

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Which BASIC interpreters support techniques for hybrid programming in Assembly?
8 votes

It is not commonly known, but the Cambridge Z88 also had BBC Basic. And supported inline assembly. For the Z80, obviously, and not 6502. A little gem of a program named ZX-IDE allows mixed-mode Basic ...

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