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20 views

How can I enable networking for a BasiliskII MacOS 8.7 VM?

I have a copy of BasiliskII (I'm aware of Cockatrice, but it does not seem to be made for Linux, at least not the versions I downloaded). BasiliskII works nicely apart from networking. What I'd like ...
0
votes
1answer
49 views

Windows 98 drivers via sound cardVT8237A/VT8251

I'm looking to try and get a VIA sound card working in Windows 98. I have everything else running no problems, just the sound. I've tried everything I can think of including VIA’s website which lists ...
3
votes
1answer
105 views

Have TCP connections ever been exclusive per port?

I came across an old service which listens on a range of TCP ports. Client connections are handled with this scheme: Client connects to the first port Server answers with a port number and closes the ...
3
votes
1answer
816 views

Was PAL or NTSC encoder IC a critical component in early video games?

I have an old Philips Videopac C52 video game console of the  Philips Odyssey 2 family like the G-7000 with 128-byte RAM: While checking its boards to compare with the schematics I got for the G-7000 ...
2
votes
0answers
47 views

Macintosh SE 30 displays half of the lower screen

I have a problem with my Macintosh SE / 30. More precisely, I only see the underside on the screen, ie from the center to the bottom. The other half, the one from the center up, appears completely ...
0
votes
1answer
65 views

iMac G3 as an external screen

I work as a teacher and I have a laptop model MacBook Pro. I like retro technology, so I bought an iMac G3, it works perfectly. I want to use iMac G3 like an extra screen for the laptop. I have a DVI ...
6
votes
0answers
201 views

Can anyone help identify this old terminal and printer found in an abandoned nuclear power plant?

I was watching a video on Youtube of some guys exploring an abandoned nuclear power plant(I believe to be in the US or Canada) that was decommissioned around 1991, and noticed this equipment at one ...
2
votes
0answers
72 views

How to get back from RAM1 to ROM after setting the bank bit to 1 [closed]

Mapping more than 64kb of address space regarding cjs answer: How to get back from RAM1 to ROM after setting the bank bit to 1? the next instruction from the program counter would be read from RAM1 ...
2
votes
0answers
202 views

How to run programs that require (DOS) LHAPI TSRs

Am trying to run this program: DD.ZIP, which is a HP dev tool for the 200LX, and needs to be run together with a couple of TSRs, as described by Dr. Reddy. Since System-Manager compliant programs ...
3
votes
1answer
151 views

Config information on ancient 16-bit Multi I/O card

I need to build a retro machine so that I can access an HDD that required manual input of BIOS parameters. (Yes, I have that information.) The only ID I can find is ES1O/4A 280695 which yields nothing ...
3
votes
1answer
581 views

Problems Connecting an Arduino Uno to a Commodore 64 Joystick Port

I have made up a DB9 connector with connections to an Arduino. I am using pins 1 to 4 on the connector. On the Arduino I have a small program which writes out a series of digital HIGH signals to the ...
-1
votes
1answer
119 views

Operating system/hardware used for playing a video during a recorded trial that took place in 2013 [closed]

I am watching a 2013 murder trial on YouTube Jodi Arias Trial : Day 23 : 1 Of 3. There is a considerable amount of evidence involving phones and computers. The following picture briefly appears on-...
-4
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1answer
137 views

please help me implement a 2C02 to use on my 6502 emulator [closed]

At the moment all i have is some arbitrary 6502 class(no audio yet). all instructions are working properly. the nesdev wiki is confusing me way too much at this point. All i know about the ppu is that ...
4
votes
1answer
153 views

Multi-GPU PowerMac G5?

I’ve got a 2005 PowerMac G5, Dual 2.3 GHz with a stock Nvidia GeForce 6600 running OSX 10.4 Tiger that I enjoy experimenting with, purely for fun and to learn writing legacy software in XCode. Would ...
11
votes
1answer
1k views

Why do Sun keyboards use diamond for meta?

The Sun Type 3 keyboard labelled its meta keys "Left" and "Right". The Type 4 changed this to a hollow diamond, or lozenge: ◇. The Type 5 and on uses a solid diamond: ◆. My ...
4
votes
2answers
316 views

How 3Dfx Voodoo 1 Emulator works

reading of this question brings up 3Dfx Voodoo 1 Emulator in my memories. I always wandered how did it work so good time as any to ask... My memory is hazy on the details so I might miss remember ...
9
votes
1answer
1k views

How did the Rush 3D engine in Crazy Taxi: Catch a Ride work?

In an interview with the developers of the Crazy Taxi game for the GBA, they mention that they were able to achieve 3D graphics with a pure-software 3D rendering engine that they called Rush: It is a ...
4
votes
1answer
162 views

Why did ISDN terminals tend to advertise the switches they are compatible with vs the standard protocols?

I've begun hacking on a lot of ISDN equipment that I've purchased (phones, terminal adapters, protocol analyzers, etc.) One thing that's struck me odd is that a lot of the equipment notes it ...
-5
votes
2answers
159 views

Why do PlayStation 1 CD-based video games (nearly?) always have to reload the entire level each time you start over? [closed]

Billy Bob boots up Tomb Raider on his PlayStation. He loads the saved game from his memory card and it loads up the level he is on. Then Billy controls Lara in a sloppily manner, so that she dies. Now ...
1
vote
1answer
173 views

When did cross-platform C start assuming function prototypes? [closed]

The most important difference between the original 'K&R' C, and ANSI/ISO C89/90, was function prototypes. These started being supported by some compilers in the mid-eighties, were formally ...
6
votes
2answers
180 views

Why do sprites lag behind a scrolling map in first-generation Pokémon games?

This is something I often notice whenever I see a first-generation Pokémon game being played on a Game Boy emulator. It might be present on real hardware as well, but I don’t have that to test. When ...
6
votes
3answers
392 views

Why does PDP-6 Fortran need JSA and JRA?

According to pdp10.nocrew.org, the JSA and JRA instructions were invented for PDP-6 Fortran. It's a strange claim; now I don't know anything about Fortran, but I find it hard to convince myself that ...
30
votes
3answers
3k views

What aspect of portable floating point did Java back down on?

Java was released under the slogan 'write once, run anywhere'; while its adoption was probably more about 'now we have a language that provides garbage collection in a familiar workflow and with a ...
3
votes
2answers
149 views

What random number generator was used in the VAX game Empire?

Around the year 1990, I played the game Empire on a VAX/VMS system. It was a turn-based, text-based-map wargame that later inspired Civilization and Xconq. What was particularly memorable about this ...
6
votes
1answer
272 views

What were the modifications on the Apple 1 board that would have made it 6800 compatible?

The Apple-1 motherboard was designed in such a way as to make it possible for the hobbyist to remove the 6502 processor and use a Motorola 6800 as the CPU instead. This was not a trivial operation, as ...
3
votes
2answers
141 views

Did communication between a PLATO terminal and mainframe use pushes?

I'm trying to learn more about how the PLATO system worked with respect to communications. I've read some of the specs, but coming from a web-background I'm unfamiliar with the underlying way that the ...
4
votes
1answer
86 views

How do I detect if AmigaDOS dos.library/CurrentDir() fails?

It seems that the primary system call to change a new directory within an Amiga process is dos.library/CurrentDir(lock) but the documentation does not tell me how to detect if it succeeded. Quoting ...
13
votes
6answers
2k views

How can extra (digital) data be hidden on VCR/VHS tapes? [closed]

For my new crime-novel I am in need of some more specific info on hiding digital data on analog VCR or VHS cassettes. I have already read a lot online and seen the LCR oddware video on that case (...
8
votes
3answers
717 views

The NexGen's x86 internal RISC architecture

NexGen was best known for the unique implementation of the x86 architecture in its processors. NexGen's CPUs were designed very differently from other processors based on the x86 instruction set at ...
4
votes
1answer
174 views

Besides the IBM 709 and its descendents, did any other machine have “slightly longer” registers?

This question occurred to me while I was formulating this answer about arithmetic versus logical shifts. The IBM 709, and its descendant the 7090, etc., is a 36-bit mainframe with a classical single-...
15
votes
2answers
2k views

Which computers did Donald Knuth “mix” together to get MIX?

The MIX was a computer design that Donald Knuth used to illustrate computer instruction sets in his magnum opus The Art of Computer Programming. MIX's model number is 1009, which was derived by ...
22
votes
7answers
5k views

What was the last non-monolithic CPU to come to market?

This answer to the question "What was the rationale behind 36 bit computer architectures?" makes the point that early computers were assembled by hand, rather than having central processing ...
4
votes
1answer
298 views

What's wrong with SNES original controller's shoulder buttons?

This is probably a hardware-related question. I have recently bought a total of 7 (seven) different original SNES controllers from different sources, all of them being somewhat used but mostly ...
14
votes
3answers
2k views

What were the differences between Xenix and Unix?

According to https://en.wikipedia.org/wiki/Xenix by the beginning of the nineties, SCO was selling 32-bit 386 versions of both Xenix and Unix. According to https://news.ycombinator.com/item?id=...
7
votes
1answer
547 views

What was the intended use for the character symbols for control codes in codepage 437?

Is there a well documented or well understood explanation for what was the intended purpose for the more haphazard glyph choices in the control code range of the original IBM PC character set? Maybe a ...
0
votes
2answers
122 views

How to decode hexadecimal number in IBM/360 column binary format

I have a message: x2400\x1100\x2001\x1020\x2100\x0900\x2008\x2012\x0900\x1001\x2001\x1010\x2001\x0900\x0802\x0812\x1200\x2010\x0802\x1004\x0820\x1010\x2100\x2002\x1012 It's in IBM column binary ...
2
votes
2answers
105 views

PDP-1 skip group invert bit functionality

I'm confused on the behavior of setting the invert bit on the PDP-1's SKP group. The manual states: The intent of any skip instruction can be reversed by making Bit 5 (normally the Indirect Address ...
12
votes
1answer
1k views

What did Prodigy use for pre-web GUI client?

Prodigy was a big early Internet service provider, and of course by the late nineties, the most popular Internet protocol was the web; most users spent most of their Internet time in a web browser. ...
21
votes
1answer
2k views

Why do Amiga Libraries have negative entry points?

As described in these answers, the jump table offsets to functions contained in an AmigaOS library are always negative values. The reason for this is not intuitive to me, but I suspect Carl Sassenrath ...
2
votes
2answers
116 views

How to use IBM SaveDskF floppy format on modern machine

Is there a way to write IBM SaveDskF disk images to a floppy on a modern machine? The floppy drive is connected via USB. Some comment somewhere said to use WinImage, but I tried that and it said the ...
2
votes
1answer
137 views

“Restoring” a 1986 Compaq Portable II (Cabling question)

I am in possession of a working 1986 Compaq Portable II. However, I couldn't find a 5.25" floppy with the proper version of DOS on it to actually make the computer, ya know, work. I've since ...
37
votes
3answers
6k views

What did AOL use for pre-web GUI client?

AOL was a big early Internet service provider, and of course by the late nineties, the most popular Internet protocol was the web; most users spent most of their Internet time in a web browser. But if ...
5
votes
1answer
850 views

When did AOL start offering Internet email?

AOL, one of the most successful early Internet service providers, started life in 1983 as a company called Control Video Corporation selling downloadable games for the Atari 2600; this became Quantum ...
3
votes
2answers
376 views

In Windows 3.11, did a unusual subnet mask actually work?

AFAIK, in Windows 3.11 it was possible to enter all kind of subnet masks, e.g. 255.255.255.1. Nowadays, the bits of the mask have to be consecutive. However, I could imagine that such a unusual subnet ...
10
votes
2answers
729 views

When does an IBM-compatible PC keyboard controller dequeue scancodes?

There is a not-unheard-of technique in DOS software to detect certain keypresses (like Ctrl+Break) by intercepting the keyboard interrupt (IRQ 1) and reading the scancode directly from the keyboard ...
13
votes
2answers
1k views

Origin of “arithmetic” and “logical” for signed and unsigned shifts

The assembly language for many processors use the phrase "arithmetic shift" to represent the bitwise shift of a signed value, and "logical shift" for an unsigned value. The two ...
4
votes
2answers
928 views

Were any decimal-based computers capable of handling text?

Many of the earliest computers stored and manipulated numbers in various decimal codings rather than in pure binary. Examples include the Mark I and ENIAC, as well as some UNIVAC and IBM models. ...
1
vote
0answers
117 views

How did commercial GBA games sample the button state?

For the GBA, I am under the impression that there are two ways to detect a button event: Enable IRQs and set up a handler for the button event Check a button's state during the vblank period Which ...
4
votes
1answer
213 views

What HyperCard extensions did Myst use?

The original Macintosh version of Myst was written in HyperCard. According to https://news.ycombinator.com/item?id=20549685 Adding useful features, such as uploading those HTML files to a web server, ...
6
votes
1answer
1k views

What programming languages were most commonly used on the AS/400 in the 90s?

The IBM AS/400, formerly known as System/38, subsequently known as i (sic), is remarkable in being essentially the most future-proof of all the minicomputers, thanks among other things to the use of ...

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