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Futuristic arcade spaceship game where your ship gains wings and wheels, collecting power-ups—from the late 80s/early 90s

Can anyone identify this game from the late 80s to the early 90s? What I remember about this game is that it had some very particular mechanics. For example, in some levels, your ship had wings, and ...
jose montalvo's user avatar
14 votes
1 answer
3k views

Historically speaking, why is man-db a separate package that is not part of the GNU project?

As far as I understand, GNU had a goal to create a completely free (libre) operating system, and to that end, created FOSS replacements for many UNIX programs. It puzzles me why they didn't try to ...
Kidburla's user avatar
  • 455
3 votes
3 answers
697 views

I want to use the line jack of a dial-up modem

Typically, an ISA dial-up modem card has two RJ11 jacks: one labeled Telco and the other labeled Line or Phone, intended to be connected to a telephone. Normally, when issuing commands to the modem to ...
Sung's user avatar
  • 389
5 votes
1 answer
232 views

Getting garbled text when using ADTPro with Apple IIc and serial connection

I am currently having issues while trying to use ADTPro to connect to my Apple IIc and was wondering whether anyone could help me. I am using this serial connection kit and trying to bootstrap from ...
Idrees's user avatar
  • 91
28 votes
5 answers
15k views

How did the Atari 2600 achieve a resolution of 160 x 192 pixels with only 128 bytes of memory?

According to wikipedia, the Atari 2600 had a resolution of 160 x 192 pixels. Had it been monochrome, it would had needed 160*192 = 30,720 bits of video RAM, or 3,840 bytes. But the total memory was ...
vakvakvak's user avatar
  • 391
3 votes
4 answers
632 views

Why is Z80 called a 8-bit CPU? [duplicate]

Z80 has a 16-bit address bus and 16-bit arithmetic instructions such as add hl,de. Why is it still called a 8-bit CPU?
xiaokaoy's user avatar
  • 141
1 vote
0 answers
219 views

ATX mainboard always on

I am moving my 6x86 system into an ATX case from an AT case. The mainboard is Amptron PM9800 supporting both AT and ATX power supply. As soon as I apply power on the power supply, the system turns on ...
Dercsár's user avatar
  • 685
40 votes
1 answer
5k views

Is it possible to know which lines in the Gameboy Color cartridge connection is missing by looking at the glitched Nintendo logo?

Context: I'm building a gameboy color flash cartridge based on the rp2040 mcu, I have came to the point where it displays an almost complete nintendo bootlogo at the startup. However, a few pixels(...
Ömer Gezer's user avatar
59 votes
2 answers
23k views

What is this large device labelled 'Telefunken Datenspeicher' and how does it work?

We found this device in our school. Does anyone know what this can do exactly, and how it could work? We managed to input values into the bit storage on the top, but nothing more. Can we calculate ...
Poldi's user avatar
  • 591
6 votes
0 answers
453 views

Why did only the TRS-80 see complaints about the screen?

Of the 1977 trinity, the PET and TRS-80 came with monitors built around black-and-white TV tubes, and the Apple II was commonly used with a black-and-white TV set. According to https://en.wikipedia....
rwallace's user avatar
  • 61.4k
3 votes
2 answers
255 views

Which S-100 systems supported both hard- and soft-sectored 8-inch floppies?

In the late 1970s to early 80s incompatible system software (i.e. MicroSoft Basic and CP/M 1.4) for S100 computers could be released in 8 inch, hard and soft sector, floppy disk formats. In that era ...
PDP11's user avatar
  • 710
0 votes
3 answers
581 views

XW8000 workstation boot from USB

I have an old XW8000 machine that I’ve been trying and failing boot from USB for the last week. I’ve tried burning Ubuntu 6.0, 8.0, 14.0, 22.04 on USB media using PowerIso and BalenaEtcher and the usb ...
Marcus 's user avatar
7 votes
2 answers
487 views

How did DRAM refresh work on the Altair 4K dynamic memory boards?

The initial memory board shipped with the Altair 8800 was a 1K board using one to four pairs of Intel 8101 1024 bit (256 × 4) static RAM. Altair then started working on a 4K dynamic memory board. The ...
cjs's user avatar
  • 26.6k
10 votes
3 answers
2k views

What were earliest attempts to make computers accessible? [closed]

Today, you have plenty of options: screen reader, magnifier, on-screen keyboard, etc. But how was the situation back then? Were there any options to make it easier for people with disabilities? Since ...
aybe's user avatar
  • 7,092
10 votes
5 answers
6k views

When did the PC bus start slowing access to video RAM?

The PC architecture, from the original IBM PC onward, has always been designed around the idea that video memory will be on an expansion card. This was an unusual design decision; most 80s computers ...
rwallace's user avatar
  • 61.4k
6 votes
1 answer
371 views

Can you write to the GDT on Windows 95 from protected mode? Why, and how?

Can you write to the GDT (Global Descriptor Table) on Windows 95 from protected mode? Why, and how? In some old notes of mine, I have: "In Windows 95 the descriptor tables are accessible from ...
AlphaCentauri's user avatar
15 votes
2 answers
1k views

Why is the addressing mode for BRK defined as "stack" in the W65C02S datasheet?

I most online documentation, I find the addressing mode for BRK to be "implied", which is logical. In the W65C02S datasheet however, it is set as "stack": Is there some reasoning ...
Bart Friederichs's user avatar
4 votes
1 answer
427 views

Is there an standardised 6502 assembly syntax?

I am working on a Flex/Bison based 6502 assembler (for fun and learning) and looking around for a "standard" syntax for the assembly language. Opcodes and addressing are more or less ...
Bart Friederichs's user avatar
7 votes
1 answer
521 views

Why is the Compaq FWS2ASPI.SYS driver not recognized as an ASPI driver?

I have a Compaq ProSignia server with an onboard NCR53c710 EISA SCSI controller. Compaq supplies a driver for it (the latest version is contained in the SoftPaq 10751 (SP10751.EXE), called FWS2ASPI....
Michael Karcher's user avatar
3 votes
0 answers
225 views

DEC (probably PDP-11) operating system with a guest mode allowing to run BASIC programs

In the mid 1970's I used an OS on DEC equipment (I believe PDP-11) that had a guest mode. If you weren't an authorised user you could login as guest mode where you supplied a name and if it didn't ...
hptsb's user avatar
  • 101
17 votes
1 answer
4k views

How did the AOL software provide internet access to other applications running on Windows 95/98?

During the late 1990s, I (and countless others) accessed the internet by running software provided by America Online (mailed to my house on free CD-ROMs) and using a dial-up modem to access their ...
smitelli's user avatar
  • 1,769
15 votes
4 answers
3k views

Can DOS make use of more than 640 KB of conventional memory on 80186?

Can I have more than 640 KB conventional RAM under some DOS? I'm looking at an 80186 PC that has RAM at address A0000. Video RAM starts at B0000 as expected for a Hercules; A0000 is just more main ...
Joshua's user avatar
  • 1,839
17 votes
3 answers
3k views

What methods were used for password encryption before adoption of DES?

It is well-known that, for quite a while, UNIX passwords were hashed using the DES algorithm (see here). However, DES was not published until 1975 and not standardized until 1977. What were the multi-...
Leo B.'s user avatar
  • 19.3k
3 votes
1 answer
243 views

When did work begin on the VIC-II?

The VIC-II, the video chip used in the Commodore 64, was the most sophisticated video chip of any 8-bit personal computer. I'm curious about how long it took to design. According to Wikipedia In ...
rwallace's user avatar
  • 61.4k
9 votes
2 answers
1k views

Atari SIO vs IEEE 488

When Atari was designing the 800 series of computers, they needed a way to connect peripherals. To comply with FCC regulations on RF emission, it needed shielded cables. To achieve low cost of entry ...
rwallace's user avatar
  • 61.4k
3 votes
0 answers
180 views

Anyone have a working Apple 13" Trinitron display?

I'd like to add an image of the Trinitron's tungsten wire that was visible on the lower half of the Apple 13" display to the Wikipedia article on the Trinitron. If anyone has one of these ...
Maury Markowitz's user avatar
15 votes
5 answers
2k views

DOS: How do I type an ANSI escape sequence?

I'm currently trying to experiment with ANSI escape sequences on various terminals/terminal emulators, so I'd like to know if there's an expedient way of typing these sequences on a DOS command prompt,...
EnronEvolved's user avatar
5 votes
2 answers
180 views

Change text color in Z80 assembly for Amstrad CPC 464

I am trying to code this program, similar to game: "The Typing of The Dead" in Amstrad CPC 464 using Assembly language for the Z80 processor. The program consists in when you see a string of ...
reymagnus's user avatar
  • 173
2 votes
0 answers
134 views

Cloning old Quantum drive using 68 pin to 50 pin adapter

I’m now trying to clone a 50 pin SCSI drive on XW8000 machine. The cable is 68 pin SCSI and has a terminator at the end, my dd command is able to copy the drive to USB, but whenever I try to restore ...
Marcus 's user avatar
12 votes
5 answers
6k views

Did any CPUs have a special instruction for multiplying or dividing by ten?

I recall reading about a CPU from the 90s which had, in addition to normal integer multiply and divide instructions, also had a special set of instructions for multiplying and dividing by ten. Does ...
billpg's user avatar
  • 273
2 votes
0 answers
171 views

Commodore 64 software sales peak year

Sales of the Commodore 64 itself appear to have peaked (along with sales of 8-bit home computers in general) around 1984, though continued for another decade after that. I'm curious about sales of ...
rwallace's user avatar
  • 61.4k
7 votes
3 answers
1k views

Storing results in BASIC DATA statements

Back when I first started in the industry, my first job was processing royalty for an oil and gas company. They used TRS-80 model 1 computers using a BASIC interpreter. The programs were on floppy ...
Tom Magaro's user avatar
8 votes
2 answers
909 views

What were MECC's specifications for a school computer in 1978?

It is well-known that one key moment for Apple was selling 500 Apple IIs to the Minnesota school system in 1978. I came across this video which discusses the background to that, including a reminder ...
rwallace's user avatar
  • 61.4k
14 votes
5 answers
10k views

Is there a reason why Apple servers did not catch on?

Is there a reason why Apple server technologies like Apple Workgroup Server and the Apple Network Server never gained widespread use and popularity?
Neil Meyer's user avatar
  • 6,507
4 votes
1 answer
165 views

ARPANET IMP topology using NCP

According to Internet Daemons, the notion of 'gateways' was introduced practically simultaneously with the TCP protocol. From what I have read, early NCP addresses were 8 bits: 2 to specify the host ...
shea's user avatar
  • 43
59 votes
3 answers
45k views

Does this 8088 code in the Leisure Suit Larry 2 game actually do anything?

In the Sierra On-Line game "Leisure Suit Larry 2" there's a part in the game where the main character (Larry) has to write a program in 8088 assembly language as part of his tribal ...
Noel Whitemore's user avatar
0 votes
1 answer
363 views

Getting started for executing retro emulator-newbie [closed]

I was going through the link https://github.com/kstenerud/Musashi/ and downloaded 68k emulator. Since I am a newbie, I could not just start executing the application. I could not find comprehensive ...
gari's user avatar
  • 17
2 votes
0 answers
173 views

Lower RAM module design for ZX Spectrum [closed]

While the upper DRAM chips for the ZX Spectrum (4164) are more stable and still accessable, the lower DRAM chips (4116) will become a critical component in the future. One of the solutions to this ...
Pygmalion's user avatar
  • 121
21 votes
2 answers
10k views

Why did nobody ever succeed in "clean room" cloning the Apple Macintosh?

As is well recorded, in the PC/MS-DOS world, Compaq and Phoenix (among others) successfully "clean-room" implemented their own versions of the IBM BIOS, thus opening the door to the PC clone ...
dgnuff's user avatar
  • 505
8 votes
2 answers
806 views

What systems actually used the ACCT command in FTP?

FTP has a USER command for sending the user name and a PASS command for sending the password. It also has an ACCT command, as RFC 959 page 26 explains: ACCOUNT (ACCT) The argument field is a ...
Simon Kissane's user avatar
0 votes
1 answer
258 views

What were the earliest images uploaded on the internet before the web? [closed]

What's the earliest images uploaded on the internet before the protocol the web existed? People believed the Cernettes image was the first image on the internet when it's actually the first image on ...
Amber Alvia's user avatar
4 votes
0 answers
329 views

How many bytes can a GameBoy copy from Work RAM into VRAM in one vblank?

How many bytes of data can be copied from work RAM into VRAM during the "safe time" while the PPU is not refreshing the LCD? I'm asking about the simplest possible case, when I am copying ...
Cactus's user avatar
  • 2,738
5 votes
0 answers
142 views

HP TSB program stored format

The internal representation for a HP TSB Access program is detailed in the 'Sources and Listings' Documentation ref 22687-90020. This describes (pages 5-28 & 5-29) how string variables, simple ...
hptsb's user avatar
  • 101
12 votes
3 answers
2k views

What is the technical definition of "clone" that makes the K1810VM88 (К1810ВМ88) not a clone of the 8088?

The Clueless Engineer YouTube channel posted a video yesterday exploring a Soviet K1810VM88 CPU he got from Ukraine. Apparently he originally used the wording in the video title that the K1810VM88 was ...
hippietrail's user avatar
  • 6,654
7 votes
1 answer
314 views

Northern Telecom SL-1 PBX Programming Language

My first job in 1981 was programing the Northern Telecom/ BNR SL-1 PBX. It had been licensed in the UK by GEC (the UK company, not the US one) from Northern Telecom, and I added some UK specific ...
masonas's user avatar
  • 71
11 votes
2 answers
508 views

1984 accounting software running in VirtualBox fails to print property to an LPT passthrough, but other software seems fine

My family still runs their business with an accounting package from 1984. The computer running it is old enough to drink. I’m trying to move it to a virtual machine. I’ve purchased a System 76 ...
Chad's user avatar
  • 111
-4 votes
1 answer
282 views

Does DOS run Crysis? [closed]

There certainly exist machines that can run both DOS and Crysis, but both at the same time? I had something like the HX DOS extender in mind and mesa3d can be compiled for DOS and Windows. There seem ...
user1095108's user avatar
9 votes
2 answers
1k views

Did VMS ever acquire filesystem cross-links?

Both Unix and Windows, quite early, acquired cross-links in their filesystems, such that the filesystems are not trees, but general directed graphs. I'm curious about whether this was an inevitable ...
rwallace's user avatar
  • 61.4k
26 votes
6 answers
7k views

What did corporations use for long-distance networks in the 1980s?

Although ARPANET was invented in 1969, the Internet as publicly available infrastructure didn't really become available until 1989. But people were certainly using computers as communication tools in ...
rwallace's user avatar
  • 61.4k
3 votes
1 answer
203 views

Did any big-iron systems implement offloaded database IO tasks?

I think I might have a false-memory, but I remember reading about some big iron system (1970s to the 1980s, I suppose) that set database benchmark records because it delegated bulk OLTP DML and ...
Dai's user avatar
  • 823

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