masswerk

I tend to think of them as slow registers, since they provide crucial functionality, as in pre-indexed and post-indexed indirect address modes. There is simply no indirect addressing on the 6502 witho…

Well, on the 6510 address $01 is a port register and address $00 the related data direction register. Therefore, C64 folks tend to ignore these addresses. (So there are just 254 usable zeropage addres…

Also, compare the "zeropage indirect" address mode of the WDC 65C02, which does exactly this w/o involving any of the index registers.

I think, this is much about another major difference in the history of both designs: while originally for a different architecture, the DP2200 processor / Intel 8008 was meant to be a CPU for a s…

Another way to put it is that in SBC context the carry provides for the bit required to turn ones' complement into two's complement (all bits flipped + 1). If it's clear, we fall short …

I guess, it's a matter of perspective. The Z80 is derived from the 8008 (actually the 8080), which was an on-a-chip implementation of the processor of the Datapoint 2200. Notably, the DP2200 was …

There are some basic debugging notes by Martin Piper: https://github.com/martinpiper/DebuggingDetails/blob/main/Ni... For better understanding: The demo starts wit…

I can kind of see why this should have been. The 1401, which was really intended as a replacement for IBM's punchcard appliances, was widely known as IBM's small mainframe. On the other hand…

Great article! Another (mid-late) data point may be the original NeXT brochure[1], which claims the NeXT to be "a mainframe on two chips". It provides a definition along the lines of a throu…

Regarding the BeOS screenshot: mind that this is not regular BeOS, but the OS X-like "Baqua" appearance of the eOS 5.1d0 developer release, which never saw a regular release. (I'm takin…

What I like to do: - have HTML files for the individual pages/posts (I like the freedom that custom HTML provides) - have a script file consisting just of a single array of meta data blocks for t…

Well, here's a more realistic test, reading and printing 16 × 16 slides from DATA statements. With BASIC 2.0 more like 1.5 fps… :-) BASIC 2.0 (slow PRINT): https://masswerk.at/pet…

I'm trying… ;-) State of affairs (progress with the game this is for); https://bsky.app/profile/masswerk.at/post/3lflueg7vdc2z …

OP here: Feel free to use/to refer to it. I'm pretty sure, I'm not the first one to have come up with something like this. (My part in this is really in organizing the data and the rela…

BASIC is about 1000 times slower, so there's no way we could do this in realtime. Moreover, as mentioned in the article, the original PET 2001 suffers from bus conflicts when the CPU and the vide…

I guess, in terms of preservation, about the same rules apply as for a citation and/or block quote. Meaning, clearly state that this is a quote and provide references to the original (so it can b…

Setun (1958) and Setun-70 (1970) https://en.wikipedia.org/wiki/Setun

This was already the cut ending, as indicated by its abruptness. The extended edition apparently tried to reintroduce some of the original ending. (I guess, the towering tsunamis were a new addition, …

The letter was complaining to Kubrick, not to the cinema, which I personally find bizarre.

Hum, the ending had to be remade after first screenings, and even as-is, it's subject to critique by many, diminishing the value of the entire film. (I recall it even being laughed at. I guess, a…

The third act is pretty much Jaws after the breakdown of the animatronic shark. There are actual pre-production stills showing aliens [1], but this was found unsatisfactory and the film drifted towa…

> She had a valid complaint, putting pooh at 11pm after 2001 Mr. Kubrick's programming choices are, indeed, bizarre. ;-)

Apparently, it does. There is a -g flag (background) to prevent focus.

That's also my theory: Country houses used to be partially shut down, a whole wing, which may only be required as an accommodation for guests, or the household may contract to a manageable core o…

Hire me! Unfortunately (or is fortunate?), I'm rather bad at real-life cynicism. So, no results guaranteed… ;-)

It's about the price of placing an advertisement. Ads becoming that cheap has eradicated significant portions of the Web, which is now flocking to the few big content platforms. I'd call thi…

So, what are my ideas? - static banners (non blinking, no transitions, esp. no vertical transitions that are designed to force you to lose focus – I've come for the content, not the ads) - no tra…

Fun effect: When finally confronted with the page-leave dialog, I automatically went for the non-default, grey option button – and was kind of surprised that this wasn't the option I wanted. I&#x…