24

The EHT (extra-high-tension) circuits used to drive colour CRT displays run at 25kV (kilo-volts), and the capacitors contain enough stored charge to kill you stone dead if you touch the wrong thing, and the stored charge does not disappear as soon as you switch the device off. I would take it to a repair shop if I were you. The technicians will have the ...


21

The (plain) 68k never had anything directly comparable to the Intel x86 range's Protected Mode. When Intel introduced the Protected mode (PM) to its x86 range of CPUs, this lifted a number of restrictions, though, that the 68k range never had: PM allowed the OS designer to protect (hence the name...) certain address ranges from access from non-privileged ...


15

Looking for either "rose.neo" atari or "rose.pc1" atari in Google images with an exact requested size of 320x200 yields this result, which seems to match your description pretty well. Could it be that one? EDIT #1 Here is a better version from Demozoo. EDIT #2 The original Neochrome file can be downloaded from this page.


13

How two 260ns RAM accesses could fit in 500ns? By using a 250ns (*1) tRC cycle? And yes, strictly that's out of spec. Still chances are very good that each and every chips will make it, as the timing range selected is rather conservative to start with. Even more so as this value is usually defined by the makers as being guarantied over the the whole ...


9

The CRT itself is essentially a high voltage, high capacitance device on steroids and can hold a charge for well over a week. Touching the wrong contacts with your bare hands will throw you across the room or kill you. Years ago I discharged a 26" CRT - melted the ground wire (10 AWG) and about 2" of a screwdriver...right hand paralyzed for almost a week. I ...


8

I'd say Zarch or as it was way more popular Virus. The game was originally conceived for the Acorn Archimedes, but soon ported to basically all platforms of the late 80s 16-bit era. There was a real hype. In fact, it was first distributed as a demo called 'Lander' with every new Archimedes computer, Making a really good case for buying one: Here are some ...


8

The Open Source Scan Converter (OSSC) supports custom horizontal sample rates, even Amiga's PAL:Super-HiRes (1440×283) mode.


8

You may be referring to Barbarian and Barbarian II from game developer Psygnosis.


7

68000 had a protected mode as well (i.e. a special mode allowing the use of privileged/supervisor instructions not normally available to user code). Err, no. At least don't call it protected mode, call it supervisor mode or privileged mode. "Protected mode" implies something like the >=80286 protected mode which had hardware memory protection. This did not ...


7

So far as I recall, the Macintosh System Software didn't bother with the user versus supervisor mode distinction. Even after the release of System 7, which supported virtual memory, virtually everything ran in supervisor mode. I think the Apple Lisa, which had a more minicomputer-like (or what we'd today call Unix-like) operating system design, as well as ...


7

On both the Amiga and the Atari, external floppy drives don’t contain any “intelligence”, and the connectors are pin-to-pin. However the Amiga uses a 23-pin D connector whereas the Atari ST uses a 14-pin DIN connector, so the external drives aren’t directly compatible, and the drives themselves are setup differently. You could build a custom cable (with ...


7

You are seeing dot crawl which is common when sending composite video into a low quality comb filter such as in that Video to VGA Converter box. To get rid of it, you will need a better comb filter (good ones are hard to find) or avoid composite entirely by converting from the STE's analog 15 kHz RGBHV to either the 31 kHz VGA that your monitor supports, or ...


6

I'm virtually positive the game was Thunderstrike released in 1990 for the ST, Amiga, and DOS. The version I had was probably an early demo since I don't recall the various splash screens (besides the loading screen). The design of the loading screen, world and ships, the POV, as well as the gameplay are very close to what I recall and the ship selection ...


6

For the ST, the best option I’m aware of is to use the Atari-provided SCART cable and the OSSC; the latter will double lines etc. to produce a picture which any modern HDMI screen should be able to display. Depending on the outputs from your C64 (which may need to be modded anyway), the OSSC might not be appropriate; the RetroTINK 2X supports S-Video, ...


6

I can't find any info whatsoever. Most likely that's just a standard SCSI case (like Ross Ridge already assumed), notable due the existence of a terminator and an ACSI to SCSI cable (maybe even a homed made one). Being a rather standard drive it no hits may turn up in conjunction with Atari - in fact, there where zillions (almost) of shops that created ...


5

Beyond the usual TOS compatibility issues which affected all Atari STs, the TT add the following twists: its faster CPU meant that some programs (games) ran too fast; this wasn’t as much of a problem as on the PC since most games used the vertical blank interrupt for timing; its 32-bit address bus meant that programs which used the top eight bits of ...


5

The question is sort of broad, since there are many ways to write software that targets the specifics of ST hardware, and which leads to programmer assumptions that break when the hardware changes even slightly. That said, you identified one of the main issues for games: the faster CPU. Not being able to slow the CPU down to the expected speed of the ST ...


5

Db is a debugger for the Atari ST and TT series of 68000-family computers... Db can use any of the ST's character devices for its input and output, including the screen, the serial port, and the MIDI port... Db is capable of debugging programs running on one machine while the bulk of the debugger runs on another. It lets you view the state of the ...


4

The 130XE outputs Composite (CVBS) and S-Video (Y/C) through the 5-pin DIN connector. Converting this to 640x480 VGA is simple with something like a DVDO iScan Plus. The SM124 has a 71.25 Hz vertical scan rate and 31.5 kHz horizontal scan rate and outputs 640x400. It cannot handle any other type of signal, not even standard 640x480@60Hz VGA. If you were ...


4

The Amiga and Atari ST were not compatible on either the floppy media format or on their floppy drives. The wiring is completely incompatible between the computer and the external floppy drives, most notably because the Amiga external floppy gets power from the computer and the ST external floppy has in built power supply. Also the Amiga disk format is based ...


3

If you're willing to modify the C64, there is a fairly recent mod that replaces the C64 modulator circuit with an FPGA board that generates an additional YPbPr signal by snooping the VIC-II chip signals. You don't mention what inputs your "modern TV" has, but component/YPbPr is more likely to still be supported rather than S-Video which is your other option ...


3

As it happens, I have my own archived copy of the STe Discovery Xtra Language disk here. Here's ROSE.NEO: I've screencapped all of the Neochrome images I have on this disk and put them on Imgur: https://imgur.com/gallery/bjs5OTC That's perhaps the full original set from that disk; I guess I was careful with preservation even when I was a teenager. No bear ...


3

Your description make me think of Alpha Waves (a.k.a. "Continuum" outside of Europe) I had as a cover disk of a special issue of "ST Magazine" called "ST PC Disquette n°1" in France. Unfortunately I don't have the booklet anymore but I still have this floppy, which was playable on both ST and PC. Here's a Youtube video of the gameplay. Edit: the "ship" can ...


3

Rather than try to 3-D print replacement keycaps, you might consider casting them in polyurethane resin. The advantages are: Lower initial cost (about $75 not including dye if you don't mind some minor imperfections, see below). No need to do any CAD modeling. The cast keycaps take the same texture as the original. No 3D print layer lines. A nearly perfect ...


3

Sony DSC-1024 works great with both ST and C64 (or any other retro analog video). Outputs to VGA CRT, LCD, etc. Can often be found used for <60 GBP. You'll need the right cables for the computers. This is professional gear that used to be popular with broadcast studios. That's why the analog (VGA) video that it outputs is relatively "pristine", even when ...


2

While both contain a standard floppy drive mechanism, Amiga external drives also have a control circuit which latches the /MTR signal and detects the drive. Without this circuit an Amiga will not know that the drive is connected or be able to keep the motor going between accesses. Apart from changing the plug, to make an external Atari ST drive compatible ...


2

Although already answered, there was a whole genre of these games in the late 80s. Another was Savage by Probe Software for Firebird. The game is mostly forgettable, but it did have unbelievably good (for the time, and if you liked hokey takes on The Art of Noise) music by Kevin Collier: Savage (Amiga) - Level 1


2

I think the game described is Rastan, a coin-op from Taito, later converted to several formats by Ocean Software, as is the case at hand. Rastan description in Wikipedia Kind regards.


2

I don't know if Atari followed any industry standard for their key designs. Also, I've never encountered a buckling spring ST keyboard; original ST keyboards used collapsing rubber dome switch contacts (domes from ebay, no affiliation). For the upper portion, your best bet is to copy one of the other keys in the same row. You should be able to pop the ...


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