-
question about RST 10hhow do you set the position of the text when using 'RST 10h' to print to screen?
... will work, your pointer in BASIC are still doing the RANDOMIZE ... to the upper screen and not to the border (lower screen) without ... -
UlaI remplaced an ULA 6c001-6 by an ULA 6c001-7 chip on issue 3B board. It is "crucial" to remove R32 and adding the 2x NAND gates ??? or not ? Thanks.
In which case the lower bank's output was overpowering ... 1 threshold is for the upper RAM... if it's TTL ... ohms.
In which case, you could also fix the ... -
Poorly Spectrum + Fault diagnosis help needed!Hi, I've got a Spectrum+. Sometime in the past I broke it and sent it off to be fixed. It came back working good as new, but with an issue 2 board i…
... the case of a 16K machine (or a 48K with bad upper ... />
4) Test upper RAM - sometimes, bad upper RAM just stops working ... , and fool you into suspecting lower RAM!
Really, you ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... ascii string (similar to basic's STR$) and writes ... of string "s". The basic equivalent to this would be ... random number generators like basic's RND and C' ... You will find the upper part of these ranges ... case we'll be using the amp2[] array containing upper ... -
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 …
... out whether characters should be lower or upper case, so it doesn't ... have to all be completely lower or upper case ... - since a 5 bit encoding is single case). -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... p_VisitMapCrossTwo()[/b]
If basic is your only background, you ... plant a splash pattern of lower crystite deposits in plots ... available. In the latter case the function waits a second ... button presses from players in case someone wants the plot, ... -
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…
... tidied up the plain-text BASIC listings on the site, as ... in the lower centre, and the fruit bonus in the upper centre ... -
What did Spectrum BASIC lack (and was BBC BASIC so good?)Over the years, I've read in various multi-format magazines, that BBC BASIC was probably the best BASIC available on an 8-bit machine. I've never use…
... one of the better BASIC interpreters on machines at ... t abstracted in the BASIC. But BBC BASIC was better than ... to write a program in BASIC for simplicity and maintainability, ... BASIC was it was case sensitive and all BASIC keywords had to be upper case ... -
At the Carboot sale today.Today at the carboot sale I picked up An Acorn Electron -I see these all the time, An Official Branded BBC Micro Datacassete Recorder - I'v…
... died shortly after too (bad lower RAM). Before I repaired it ... (immaculate, with fully working keyboard) case. The dead person's Spectrum ... key case, since the rubber key machine's motherboard has bad upper ... -
At the Carboot sale today.Today at the carboot sale I picked up An Acorn Electron -I see these all the time, An Official Branded BBC Micro Datacassete Recorder - I'v…
... died shortly after too (bad lower RAM). Before I repaired it ... (immaculate, with fully working keyboard) case. The dead person's Spectrum ... key case, since the rubber key machine's motherboard has bad upper ... -
Where will Microsoft go after Vista ?If i were Microsoft, i would develop a media center only OS with no backwards compatability that would be able to be used on a Dual Booted pc running…
... to keep fetching and updating basic software.
[/quote]
lower level interfaces from two points ... seldom used options. In any case, usually by default common commands ... a normal user). In any case, this problem is much, much ... -
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 …
... , but if that's the case, then I can feel a ... audio outputs and have an upper bw limit probably around 18kHz ... push the instantaneous frequency content lower so that it is blocked ... the tape player. Likewise the upper bw limit (I think the ... -
To Winston , diag-interface.Hello to all, first, sorry for my english i'm from spain and my english is very poor. Wiston, thank you very much for your great work "diag-interface…
Looks like both lower and upper memory are duff - the tests ... are showing up bad upper memory, too.
The ... any other pin, just in case I've missed a stray ... on all the sockets in case there's a bad connection ... -
Rom dumping a Mirage MicrodriverI need to dump the rom of my Mirage Microdriver for Zub and don't know what to do...any help?
... ROM. You've got two basic ways of doing it - either ... suppose that is the common case. (The Beta 128 will apparently ... can be paged into the lower 16K at any one time ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... circuit board. Instead the ts2000 case was used for a small ... to be confusion between Microsoft Basic and CP/M, with the ... customized. Sinclair's approach has lower up-front cost, higher unit ... game machine into a computer case and Sinclair was putting an ... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... circuit board. Instead the ts2000 case was used for a small ... to be confusion between Microsoft Basic and CP/M, with the ... customized. Sinclair's approach has lower up-front cost, higher unit ... has high up-front cost, lower unit cost and higher density ... -
sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
... -5V supply lines to the lower DRAM. I wouldn't replace ... probably need replacing in your case) to generate -5V and +12V ... the memory configuration for the upper bank. Traditionally these are 64Kx8 ... -
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…
... .
Maybe a higher or lower impedance of this particular Z80 ... coil on it on the upper right corner that i haven ... +). Go figure....
My case has to be something like ... -
'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
... 128K BASIC? I am unsure to be honest, but in any case ... /> I just put this pure-BASIC screen-flipping demo together.
Download BASIC demo screen flipping snapshot here ... the BASIC area, reserving room for the screen2 in the upper 16K ... -
'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
... whichever screen was paged into upper memory.[/QUOTE]
Yes ... statement to print to the upper memory screen.
... standard ROM and in any case, for graphics commands, I don ... ourselves to a 100% pure BASIC program). I could presumably use ... -
VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... intends doing any further BASIC development within VIC-20 ... useful Speccy tool for Sinclair BASIC programs, known as "snaplist ... .prg[/b]
for an upper case listing.
The ... useful to anyone doing VIC BASIC development under "Twenty Commodes", ... -
Screen access in assemblerI am again troubled by the unusal screen design of the Spectrum. :) If I want to do something with, say, a 16x16 bit block of the screen (in the sam…
... the lower three bits of H?
In this special case ... only did for the most upper screenpart)
Clear ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... , including the basic program! Try running it for upper memory only - 32768 ... to 32767 to try the lower memory. 16384 to 23295 are ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... with them is that the BASIC program itself resides in ... a large area in the lower 16K that can't ... the machine stack in the upper part of RAM. Overwriting ... 48K machine, testing the lower 16K only I think.
BASIC would be the easiest ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... it. Is it just a case of connecting the headphone socket ... mentioned.
In any case, if you can get software ... on the tape tests the lower 16K of RAM. (Select (S ... /> The second program tests the upper 32K (both use a machine ... -
Jetpac questionHi all, I just bought a copy of Jetpac off of Ebay and I'm having problems. To start, I'm trying to play it on an issue 2 Speccy with Interface 1, 2 …
... the lower 16K, as that existing one doesn't (and a BASIC ... one didn't seem sufficient in this case.)
4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?
... test on startup. If the upper 32K has a fault, sometimes ... not crash. But if the lower 16K is defective, all ... variables, BASIC etc., frame buffer all lives in the lower 16K)
lower 16K is all lined up ... of the PCB. The upper 32K is in two rows ...Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... printing
ret ; return to BASIC
doprint ld ... the printingroutine:
The BASIC will print anything that is ... PRINT-command.
The BASIC-interpreter in the ROM makes ... the upper-screen (the screen above the inputlines) or the lower ...Getting started with asm Speccy codingSomeone on another forum I read has asked for good Speccy coding resources. I thought it would be great to link him to a simple tutorial about how to…
... won't return to BASIC you can start your ... A
CALL #1601 = lower screen
LD ... CLS and will ALWAYS set upper screen!
... ; subroutine that clears the lower display area. Note that at ... for the lower lines are the same as upper ones ...Interface One - New FunctionalityAs you may (or may not) be aware the Interface One is a pretty powerful piece of kit. One of it's greatest features is being able to easily extended …
OK, I've coded this to add a @DEEK function to Spectrum with IF1.
The caveat is that it only works within a LET statement, in this form:
LET n=@DEEK v
Where 'n' is any numeric variable, and 'v' any numeric expression BC (or ...
