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Please explain how a Kempston interface circuit works.Can someone help me understand how a Kempston joystick interface works, as I want to design and build my own as an experiment. I understand switches…
... fitted between +5V and each input line from the joystick. These pull ... is operated, it connects the input line to 0V (ground/common), which ... the resistor and so the input line goes low. Note that ... supply the control input of the tri-state line driver / buffer ... -
hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... not counting it, as any input record which doesn't generate ... can be derived from, the input data. (Something which I forgot ... key for all 102 possible input types, so I can do ... I need to process an input line. (Previously I was doing an ... -
hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... match a literal on each input line; content will be lower case ... of the remainder of each input line; content will be in the ... :
[list]
[*]analyse the input line to generate x$(6)
[*]process the input line based upon the data in ... -
eVALuating $ in +3 BasicHi all, I was very interested in the thread below about re-starting Basic, and remember reasonable amounts from zx81 and early Spectrums. But I now h…
... a routine "Editing strings with INPUT LINE" in the Editing.TXT section ... loading BASIC programs, so each line is syntax checked with LINE_SCAN.) -
TXT2EMU enhancementI was looking at the encodings supported by BAS2TAP for entering graphics, print controls, etc. as plain text. Basically, there's only one needed, be…
... check the syntax of the input line so that was already checking ... came up with each 'd*' line as an error, and with ... as expected, showing each RAMdisk line as an error and accepting ... -
Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…
... vertical lines (each horizontal line being a keyboard input line). Sure enough in ... RAM there was no D3 line at all. Nice and easy ... -
ZX Spectrum 48K Issue 3, loss of -5V rail.Hi all, I've googled this problem and poured over the electrical diagrams for the circuitry concerning the power supplies and I believe I know what …
... same as the "+9V" input (as the external PSU ... from the "+9V" input line to the +12V line.
... the +9V" input line and the +12V line is the same, ...
If the +12V line is good and the internal ... chips dragging down the -5V line.
[B ... -
Utility to create long REM Line for storing M/C program - Maximum BASIC Line LengthHi, I think there was a Utlity or Toolkit to create a long REM-Line under 48k BASIC to store some MCode in it. So I don´t have to type e.g. 5…
... REMbuild.BAS [code]
1 INPUT "Length ";rl: RANDOMIZE rl: CLEAR ... POKE 23628,PEEK 23671:
INPUT "Line# ";rn: LET rv=VARS+4 ...
--
A REM line has a 4-byte header ... required delimiters for the REM line. Thus the REM will ... -
Type a screen of text from the start screen.I've forgotten all the combo's of symbol-shift and so on, but is there a way, from Spectrum Basic to just type out a load of text? Problem is, as soo…
... 'i EXTEND+3 a$'; ie. INPUT LINE a$
Either of ... text input up to an ENTER as plain text (using LINE omits ... line number will save it in the BASIC area, and using INPUT ... -
Interesting VAL featureHi Folks, No doubt most people know this but it is new to me! The following code generates the answer of 10. [code]10 LET A$="X+X" 20 LET X…
... but I assume it used INPUT LINE to get the answers and ... -
Kempston interface schematic: wrong IC?Hi! I'm trying to learn about the inner workings of the speccy, and I thought that building a kemspton interface would help me learn about things lik…
... resistor connected to the fire input line.
[b][i]Mark ... -
Need help with a sort of Turing Test programI've not had much luck trying to find Basic how to's about Arrays, Strings what modules can allow for a program that accepts input text and appears t…
... /> 130 GOSUB 2240
150 INPUT LINE a$
152 LET flag ... -
Using INPUT without clearing last two lines of screen?I'm trying to print to the 22nd row of the screen using the ol' print #0 trick. Unfortunately, I require user INPUT which seems to wipe out the botto…
... trick. Unfortunately, I require user INPUT which seems to wipe out ... way of keeping line 22 intact and still use INPUT? Or do ... using INKEY$ to simulate user input? -
Real Tape Mode From Line-OutHi folks, Are there any emulators that allow you to choose which input signal they 'listen' to ? Say for instance many emulators support real tape m…
... allow you to choose which input signal they 'listen' to ?
Line-In or Perhpas Mic port ... possible to listen to the Line-Out ?
I was ... the tape waveform from the Line-Out. This may allow to ... -
Keyboard Input$/scan problemHi, I'm finally fulfilling my promise to get a reasonable understanding of the Speccy and embarking upon attempting a few simple routines in Assembl…
... colour based on an input value that varies according ... as above ~ only rewriting line 4 as: 'IN A,( ... FEh)' and exclude line 10 because it will not ... ' I get the same input value as my intended 'k ... method of retrieving keyboard input data?
... -
speccy sound input sensivityis there a way to increase sound input sensivity of 48K spectrums? As most of us trying to transfer tape files to spectrum via our onboard soundcard…
... a way to increase sound input sensivity of 48K spectrums?
line-out signal, instead of an ... -
SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... ago I searched for an "INPUT string" routine that I could ... lot when editing longer (multi-line) strings:
[CODE]
SHIFT ... move the cursor inside the input area
SHIFT-9 to ... -
Using even ports for input?I've been looking for unused ports to use with my clashbasher interface. I understand that the spectrum only considers A0 when decoding its input p…
... considers A0 when decoding its input port for reading the keyboard ... used to select which half line in the keyboard is to ... lines are deselected, the EAR input is only used for loading ... -
INPUT help?Hi folks. :) Brace yourselves, this is probably a very silly question, my BASIC knowledge is very... well, basic... Let's say, for example, I'm mak…
... a line to generate the random number, then I have an INPUT ... (1+999*RND)
20 INPUT "Can you guess the number ... /> I'm thinking the next line should be something like "IF ... -
How important is the 9V line?I'm in the middle of resurrecting an Opus Discovery. The transformer is gone so Im using a small switched mode PSU from a PC. My plan is to bypass …
... 9v line to the Spectrum, can I use the 12v input to ... feed the 9v line?
What ... -
Simple program why doesn't it react to keyboard input?[code] 10 FOR x=16385 TO 22527 20 POKE x,255: POKE (x-1),0 30 IF CODE INKEY$=119 THEN BORDER 0 40 NEXT x [/code] If you press the m key while r…
... see a animated line but no reaction to keyboard input. What's ... presses. I don't need INPUT INKEY$ -
INPUT ArchiveHowdy folks. I'd really appreciate some help in this. I'm planning on creating an online archive of the old coding mag INPUT (having recently acquir…
... of the old coding mag INPUT (having recently acquired the entire ... ]http://members.tripod.com/rambozodublin/input/gen_imgs/machine_id/test.html[/url ... -
line routineWondered if anyone can help me out. I have been programming a 3d graphics library for the spectrum, in Machine code. The line routine that I have i…
... Machine code.
The line routine that I have implemented ... out there have a fast line routine, plese email me.
INPUT ArchiveHowdy folks. I'd really appreciate some help in this. I'm planning on creating an online archive of the old coding mag INPUT (having recently acquir…
... of the old coding mag INPUT (having recently acquired the entire ... ]http://members.tripod.com/rambozodublin/input/gen_imgs/machine_id/test.html[/url ...INPUT programming magazines on eBay!Hi, I'm just bring to your attention the fact that I'm selling the complete run of 'INPUT - Learn Programming For Fun and The Future' magazine on eBa…
... selling the complete run of 'INPUT - Learn Programming For Fun and ...Loads Of Mags - Input, Sinclair User, Your Sinclair, Crash I have loads of Input, Your Sinclair, Sinclair User and Crash magazines that I would be prepared to sell if anyone is interested. Some are very old …
I have loads of Input, Your Sinclair, Sinclair User and ... a lot.
The Input ones are especially good for ...
