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Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…
... /> [code]
; input x=A, y=L; output HL< ... / 7,12
ADD A,A ; A = YYY00000 1 / 4
A,A ; A = YYY00000 1 / 4
ADD A,C ; A = ... [CODE]
; input x=B, y=A; output HL
... -
Preferred way of determining Y co-ord in assembly?I know of 2 ways of calculating the y-cord of a pixel row for the speccy in assembly. One is to calculate the address by ways of shifting and masking…
... ]
[code]
; input x=A, y=L; output HL
ADD A,(HL) ; 1 / 7
... ; 1 / 7
LD L,A ; 1 / 4
RET ; ... -
text routineI want to write an adventure in basic, and instead of a writing out a description for each location i want to use a kind of text compression routine …
... in machine code, I remember INPUT had a text compressor program, in ... 20 I think. They used a scheme wereby more frequently used ... letters following each letter in a very short code something like ... to come after the letter A, and T is second most ... -
sick joke number 1I've heard they were having an 80's revival weekend in the USA... ... it was going OK until Katrina and the Waves showed up. *wince*…
Q. What's more fun than spinning a baby around at 60mph on a rotary washing line?
A. Stopping it with a cricket bat.
Q. What's funnier than a dead baby?
A. A dead baby in a clown suit. -
Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... 's goods. That will save a further 20 characters, making 90 ... -
Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... the problem of invaid user INPUT causing a subscript error. Maybe it ... but sounds too "expensive" for a one-liner. Personally I would ... prefer a better gameplay instead of better ... provide a wrong value by mistake since it's an INPUT he ... -
Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... /> Two seperate INPUT commands:-
First INPUT parameter is cardinal ... a challenge.
4) I tried using one INPUT ... work, using floating point INPUT to a numeric variable, and ... But overall, two seperate input commands, both reading integers ... -
Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…
... next move. However, since we INPUT the move first and only ... computer would still try to INPUT again a player's move, and ... perform again a single move validation from the player's INPUT. In ... comparison, eliminating conditions (1) and (3) saves just a ... -
OLED/LCD DisplaysHas any one got one of these units working with a Spectrum? Like the one we have been messing about with over at the [url=http://www.jupiter-ace.co.…
... - they take a 24 bit parallel digital input, and a couple of other ... resolution, or are you after a higher res?)
Sparkfun ... Electronics also have a range of various interesting LCDs. -
Fastest Baud Rate On A Loader ?Following on (sort of!) from the thread about the best loading.... Which game(s) had the fastest (highest baud rate) ? I seem to remember a couple …
... be clear to anyone without a basic understanding of electronics. ... to the EAR input on a Speccy (or the input of most audio ... before an offset would cause a problem. Algorithms exist in ... reasons, guaranteeing there is never a significant offset.
< ... -
How does the Z80 work internaly?How does the Z80 work internaly, i.e. how does it actually execute a machine code instruction? When it fetches a byte from the memory and finds, for…
... the fully detailed answer in a forum posting...
- a latch to store the instruction ... the register store, which is a mini block of RAM - give ... it takes two input bytes and a signal to tell ... the other ALU input to a hard-wired 0000 ... -
Mall shootersSo there was another Mall shooting over here yesterday. Another 'pained' teen shot up the mall and killed 8(?) peeps. Bring back the cane I say..the…
... on it and you have a semi automatic weapon it would ... the food court, movie theater line, a line waiting to pay or any ... -
Mall shootersSo there was another Mall shooting over here yesterday. Another 'pained' teen shot up the mall and killed 8(?) peeps. Bring back the cane I say..the…
... on it and you have a semi automatic weapon it would ... the food court, movie theater line, a line waiting to pay or any ... -
Speccy plus composite modHi folks, I have 2 48K speccy plus machines both with really poor RF output, one is very weak and the other wanders and white tears across the scree…
Actually the input is a weak RGB signal, different amplifier ... -
New Spectrum GameAs some of you may be aware I've been busy working on a Shoot-Em-Up Designer utility for the past few weeks. As the program is pretty much there now…
... where it asks me to input SYM+A at the end of ... when I do the SYM+A there, then I tried the ... command finder (SYM+A=STOP) to no avail either ... -
DivIDE+ and 128K HeatsinkI got my DivIDE+ yesterday and i tried it on a 48K+ at first, it worked marvelously on it, no problems at all. Today i desided to try it on my 128 H…
... making inverted M1 signal using a transistor (don't know if ... I replaced the transistor with a 74LS14 gate. To avoid glitches ... I placed a resistor in series to its input and a capacitor from ... its input to ground. After ... -
St. Michael Micromasters: Computer GamesHi, The [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=2000988"]St. Michael Micromasters: Computer Games[/URL] book doesn't currently have a…
... gosub 3000
210 input"bottom row ";br:gosub 3000 ... br=d
220 input"left column ";lc:gosub ... 3000
230 input"right colum ";rc:gosub 3000 ... rc=w
240 input"pattern length ";n:gosub ...
360 input"another go (y/n)";a$
370 ... -
Spectrum more loved than C64It just occurred to me that the Spectrum must be more loved than the C64 these days. After all, it has been more than a year since an update was made…
... ! So there ... (sounds like input for a new thread ... can I play ... -
work problemslet me take you back to summer last year i started courting a young lady, things went sour, things were said etc. we started getting freindly again r…
... last year i started courting a young lady, things went ... my back or being made a fool of. (at least ... attached to women. As a strange side effect to this ... I lied' (I use this line a lot .....sometimes its good to ... shaking your head....throw in a 'sucker' too as you ... -
work problemslet me take you back to summer last year i started courting a young lady, things went sour, things were said etc. we started getting freindly again r…
... emotionally attached to women. As a strange side effect to this ... 'I lied' (I use this line a lot .....sometimes its good to ... shaking your head....throw in a 'sucker' too as you stroll ... -
[WANTED] ASM routinesHi there, 1.) i really need 5-6 working and well commented routines, showing assembler capabilities. They should be simple, but not too much complic…
... ;subroutine
LD A,242 ;color attributes
LD ... (23695),A ;setting ATTR_T
... pchar
LD A, H ;A = 0
CALL bcd2bn
input: register A with BCD - i have ... -
[WANTED] ASM routinesHi there, 1.) i really need 5-6 working and well commented routines, showing assembler capabilities. They should be simple, but not too much complic…
... can be printed on screen (input: register A with BCD - i have ... "][CODE]
LD A, L
CALL bcd2bn ;A = 0AH
... ADD A, '0'
LD ... pchar
LD A, H ;A = 0
CALL bcd2bn
myspeccy.org - online gaming which auto-saves scoresIt's a blimmin' miracle - I'm most impressed.
... it off so I left a day later.
Just ... ! I am only on-line a few times a week now, and have ...How to contend memoryHow has this been achieved, electronically? Is there a "memory ready"-line for each bank, or something?
... achieved, electronically? Is there a "memory ready"-line for each bank, or ... lines, one or more data line, a RD (read, active low - sometimes ... address, and a CS (chip select, active low) line to select this ...Plugging a 48K rubberkey into a VGA/DVI monitor: doable?I'm sure this has been answered before but searching for "monitor" and "vga" gave me a squillion results, none of which appeared relevant. Simple ye…
... that specifies Composite ('Video') input and a VGA output. It will ... so it might be worth a try, and might work ... ve just taken the composite input to the modulator, plus ... URL] arrangement (i.e. a buffer), and it's ... . I know this is a bit 'controversial', but it ...Post your computer stupiditiesI used to check this site out quite a lot [url]http://www.rinkworks.com/stupid/[/url] but it doesnt get updated much. So i was wondering what stu…
... br /> I was sitting in a small village in Staffordshire, the ... version which running as a single app on my ... wouldn't repond to input in a timely fashion. They decided ... and the like for a living. The PLC engineers ... where about to have a meeting after which they ...How does one capture video from a Windows application?All the movie-maikng software I've looked at require an external source. :(
... need - either one built into a laptop (which is quite common ... you'll need some input card. I use a Pinnacle Systems Studio ... ) for all analogue video input, and a firewire connection for my miniDV ... video input (still in my ...Trouble compiling my BASIC programI've been trying to get a compiled BASIC version of Swift Turtle with no luck so far! I first tried MCoder 3 and it [i]seemed[/i] to compile the prog…
... [code]
REM code amended a bit from original for clarity ... routine to find a string match from input in a$
94 ... so that on finding a match it proceeds to ... lack of listing is a drawback IMO that denies ... curious people to have a look at the code ...Easy Spectrum games to completePost here the easiest Spectrum games that You all have played, the more you post, the better (cos I am looking for more games to play and finish :D )…
The Great Space Race can be "completed" almost entirely without user input. Pressing a few keys at opportune moments may serve to marginally increase your score though.
