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Results tagged with zx-spectrum
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user 5039
For questions about the different versions and products of the Sinclair ZX Spectrum computer
10
votes
Are there any ZX Spectrum applications (mainly games or demoscene productions) that use a po...
I know of an application that uses a different port from #FE to change border colour. It concerns all of my border art viewers, and the reason why the different port had to be used is as follows.
I w …
- 4,207
8
votes
Is there a list of space-saving techniques for representing constants?
There are quite a few options available if you need to reduce the size of your BASIC programme. Some of the options are more extreme and may require binary modification of your program (or the use of …
- 4,207
18
votes
Accepted
Why was the Amstrad CPC slow at scrolling
The fundamental issue with scrolling is that, unless your hardware does it for you, it involves moving around the contents of your whole video memory. In other words, scrolling is the type of video pr …
- 4,207
55
votes
Accepted
How do I extract the program from the Radiohead "Nude" tribute by James Houston?
First, many thanks for the great question. This may well be my favourite retrocomputing video of them all, so I contemplated having a look at the executable for a while myself. So, this is what I did: …
- 4,207
11
votes
Accepted
Does Sinclair Spectrum BASIC have a maximum length for one line?
The correct answer to your question is YES, and NO.
YES, if you are editing a long line in the editor of 128K BASIC, you are limited to the size of line buffer, which can hold only 20 screen rows. Yo …
- 4,207
23
votes
Why does this BASIC program declare variables for the numbers 0 to 4?
The answer by Raffzahn is very good, except that I disagree that ZX80/81 background is all that important and I also feel he missed one important trick.
I personally know most of these tricks from st …
- 4,207
14
votes
Accepted
How compatible is the Leningrad clone with the "original" ZX Spectrum?
Leningrad is a primitive and not particularly compatible clone. However, it is pragmatic, so the incompatibilities are not always going to show up. The main differences are due to a completely differe …
- 4,207