-
alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…
... under 32K is available for BASIC
the shadow screen is ... to the lower screen area now write to the upper screen area ... almost a full 48K for BASIC programs. On the other hand ... -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... to calling program' (in our case a BASIC routine) is 'ret'.
Change line 20 'ld bc, 0 ... round the game before GAMEOVER change line 55 to 'jp PRINCIPALLOOP ... .
If it is odd, lower the road position in hl ... -
General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …
... for the Spectrum (in BASIC). It is still quite ... $="": GO SUB 9000: REM Upper Case,Optional
190 LET ... $="": GO SUB 9000: REM Upper Case,Required
230 LET ... (3)
9090 REM Upper Case(4)
9100 REM ... 3438: REM ROM CLS-LOWER
9270 LET i ... -
Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…
... that outputs to the lower screen at various places, ... present the main BASIC program uses the upper screen and ... BASIC, which does what I expect.
I want the lower ... 'd just need to change the start line to ... still goes to the lower screen, and not only ... -
The Sinclair ZX Microdrive Resurrection Project (long)Dear Spectrum fans! [Management summary: Download [url]http://www.bartheld.net/temp/mdv2img.zip[/url] and tell me what you think. All help very much…
... /> Next thing was getting the basic communication right. Davide Guida's ... cartridge's sector in the lower part of the Spectrum's ... log file name after each change as appropriate) and hit SPACE ... . Unfortunately this is rarely the case, just once during my tests ... -
multi-scroll m/c subroutine for BASICArising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. whe…
Arising from recent posts, here's a scrolling routine that will manage multiple left/right scrollings for any (sensible) line width or step; (ie. where width is -
Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
...
I've done this BASIC version, which follows the original ... probably do the other three basic arithmetical operations as well.< ... : REM RR H ; RIGHT SHIFT UPPER
1230 GO SUB FN ... ("C") : REM RR C ; LOWER 32BIT OF RESULT
1340 ... -
JSW1 - Game Loader DifferencesThere were four releases (five if you count the PGC bugfix) although with a few exceptions the loaders are about the same. [B]Loader: Pre-Production…
... , apart from the obvious text change the only other difference really ... lower memory point to allow the Speedlock saver to sit in upper ... something I fully understand, the 'basic' is shown in the screenshot ... -
Stickers for Speccy2010 case/boxWell, I was making lately such stickers for myself (one for the upper side and one for the lower side of the case) and I already have them on the box…
... the upper side and one for the lower side of the case) and ... [/img]
The lower part is a little bit ... small empty space just in case - to cut it off, if ... -
Something I made in Minecraft...So, this is what I do in my spare time these days (when I'm sure a lot of you will be screaming for me to come back to Speccy-land; I assure you I wi…
... soon realised that the black case of the ZX81 wasn't ... the black label on the lower slope of the top cover ... height. The height will not change when I finish the undertray ... there, somewhere, is a very basic computer (of sorts) built using ... -
Upper case in INKEY$Hi, how I get upper case in INKEY$ ? Is there a POKE ? Thanks.
Hi,
how I get upper case in INKEY$ ? Is there a POKE ?
Thanks. -
Issue 6 repair with a twist...(Starting with a slight grump - the forum ate my first attempt at this so this'll probably end up being a bit terse :)) I got a Issue 6 48K machine …
... br />
I suspected faulty upper RAM trashing the stack, and ... the diags were reporting both lower and upper RAM were healthy.
lower RAM issue, I entered and ran a simple BASIC program ... />
One last oddity - the case in which this board resides ... -
SpecBAS 0.830 Released!Hi guys - A new official release of SpecBAS has been released. The full changelog is below, but for now here's the download: [url]https://sites.goo…
... " at position "start"
CHANGE: UDGs have been changed, and ... SCREEN$ - as from Sinclair BASIC, identifies characters at an x ... operator now has a lower priority than functions and ...
Single-line CASE...WHEN...END CASE constructs, although insane, ... -
lower part of the grey Spectrum +2's caseHi, does anyone have a spare lower part of the grey Spectrum +2's case for me - I mean the base part of the case. Greetings Ingo.
Hi,
does anyone have a spare lower part of the grey Spectrum +2's case for me - I mean the base part of the case.
Greetings Ingo. -
Bizarre ZX Spectrum faults (also possibly relevant to Spectranet compatibility problems).I'm attempting to repair an issue 4A 48K ZX Spectrum and am encountering some very strange problems. For my own records I've given this computer the …
... d post the story in case I might receive some useful ... a RAM fault while testing lower or upper RAM.
... another oddity. While entering a BASIC program, the TV would occasionally ... br />
Following changing the upper RAM from the original OKI ... -
Spectrum + 128K (Toastrack) Upper caseLooking for the upper part of the case for a Spectrum + 128K.
Looking for the upper part of the case for a Spectrum + 128K. -
Upper memory issueZX Spectrum 48K, issue 2, boots fine. Lower RAM OK. When tested with the new test ROM in the Diagboard, for all upper RAM tests "FAIL" is shown. I…
... , issue 2, boots fine.
Lower RAM OK.
When tested ... in the Diagboard, for all upper RAM tests "FAIL" is shown ... be more important for the lower RAM, are the voltages:
change things when I swap IC19 ... -
Spectrum 48+ 4S - Upper RAM issue, and now a self-created problem!I recently picked up a known-flaky spectrum off eBay, to have a bit of fun fixing it and reliving youth. It was labelled as 'keyboard duff, shows…
... diagnostics said the whole of upper RAM was faulty (check all ... , I've removed all the upper RAM ICs, replaced with sockets ... screen.
Given the lower RAM used to be okay ... IC15 to eliminate it, without change.
Any help appreciated ... -
Upper memory not available in issue 2A friend send me his issue 2 Spectrum for diagnosis. It boots okay but for some reason won't load games over 16kB. He sent also a Smart Card with int…
... diagnostics ROM, which failed the upper memory RAM test, suspecting IC25 ... that didn't bring any change.
I did ... low.
Both upper and lower memories have been upgraded prior ... A15 high to enable the upper memory and under which ... -
ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... binary but could easily change that if somebody wanted ... /> // offset is then lower 5bits of 1st byte combined ... allocate full 6912 just in case
if((store=(unsigned ... /> ;;
;; code for pasmo basic
END $c000
;; ... -
Lower & upper ram IC's for an issue 3 please.Would any of you great folks have 1 spare lower ram, and 1 spare upper ram IC's you would be willing to sell. I'm fixing up a poorly Spectrum that is…
... have 1 spare lower ram, and 1 spare upper ram IC's ... -
New Version of ZEsarUX v9.3 Beta 1 availableNew Version of ZEsarUX v9.3 Beta 1 available Downloads: [url="https://github.com/chernandezba/zesarux/releases/tag/9.3-25062021"]https://github.co…
... /> -Mouse accions: click (toggle breakpoint, change registers), scrolling up/down by ... wheel
-Can now browse Basic variables on ZX Spectrum, ZX81 ... setting to disable boxes around lower and upper ZX Desktop Buttons
ZEsarUX 10.0ZEsarUX 10.0 is out! Download it from : https://github.com/chernandezba/zesarux/releases/tag/10.0 Changes: Version 10.0 - Clive Sinclair edi…
... /> -Mouse accions: click (toggle breakpoint, change registers), scrolling up/down by ... Debugging:
-Can now browse Basic variables on ZX Spectrum, ZX81 ... setting to disable boxes around lower and upper ZX Desktop Buttons
Spectrum Abuse...Just got some new Spectrums in to repair ( I find it a great way to relieve stress, excepting when I do something daft while fixing them... ) One …
... it had a faulty lower-16 ram chip... Replaced ... checked screw length just in case, and that was OK. ... microscope out. Seriously bad case of dry joints AND ... seems someone decided to change C65 on an Issue ... of the board. Both upper board tracks were completely ...TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…
... lower 16K only working. Ramtop gets set at 32768 etc, no upper ... I run a small BASIC test program, which pokes ... does not fail with BASIC, but the ROM cannot ... upper 32K and indirect, slower access to the lower ...
Just in case someone reading does not know ...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…
... enough, that multicoloured display equals "change the Z80" - which people who ... the case of a 16K machine (or a 48K with bad upper ... Especially the 4116 RAM chips. Change any 4116 chips that get ... , and fool you into suspecting lower RAM!
Really, ...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…
... and "col" parameters will not change the original values of "r ... p_VisitMapCrossTwo()[/b]
If basic is your only background, you ... plant a splash pattern of lower crystite deposits in plots ... 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…
... up the plain-text BASIC listings on the site, ... /> I think we should change the layout of the maze ... the lower centre, and the fruit bonus in the upper centre ... /> I think you should change it. I like the ... qoap keyboard settings for this change. I will do this ...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]
< ... goes, I dislike it's lower level interfaces from two points ... that 'dir' is used to change directories. At least most of ... seldom used options. In any case, usually by default common commands ...'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 ... standard ROM and in any case, for graphics commands, I don ... ourselves to a 100% pure BASIC program). I could presumably use ... as the colours on screen change, the ocasional roll of the ...
