-
Joystick Interfaces on +2AJust found out that my DK'Tronics joystick interface doesn't want to play with my +2A (black). The Kempston port works OK, but not the Sinclair port…
... mainly used for inputting the lower 5 bits
of the ... MOUSE when
the address lines AD8 – AD15 are high.
THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…
... much vegetation, actually the drawing lines are there to express the ... lot of vegetation in the lower left corner of the picture ...Fixing/modding my new +3Hi, In december I won an auction for a working +3 with a dead floppy drive, + a Multiface 3, some disks and tapes, for a very low price (I think nob…
... to cut the drive select lines etc, just add a wire ... 4 of IC15 and the lower pin 7 of the external ...RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…
... /down/left/right/fire joystick lines (AY-3-8912 IOA7, IOA3 ... wanted. The 1N4148 diodes will lower the output high voltage by ...Yellow issue 4A keyboard madnessNote sure if this is a similar problem to the one CornishManicMiner has, but one of my yellow issue 4A boards is driving me crazy. I had it in variou…
... also known as /IORQULA). [COLOR=Red]--> I guess you ... meant 13B? 20.2 kOhm[/COLOR][/QUOTE]Alas, the 'A ... CPU) pin 20 (/IORQ). [COLOR=Red]--> 0.47 kOhm ... after the first test. [COLOR=Red]--> 18.3 kOhm ... 64 kOhm[/COLOR][/QUOTE]The second reading is lower than I ...RS232 on Spectrum 128KDoes anyone actually use the RS232 port on the Spectrum 128K? Is there anything useful that can be done with it? I know about the keypad with the Sp…
... /down/left/right/fire joystick lines (AY-3-8912 IOA7, IOA3 ... wanted. The 1N4148 diodes will lower the output high voltage by ...The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…
... puts the prompt on the lower part of the screen, so ... need that many lines. The less significant address lines together with some ...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…
... the black label on the lower slope of the top cover ... I can with the straight lines and 90? angles of Minecraft ...Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... , for each of the 192 lines on the screen, then no ... all for the next 70 lines.
The 2 ROMs ... coming from U21 have a lower voltage swing (from ground to ...Spectrum screen layoutSeeing the thread on displacement I was wondering why the spectrum had the stupid screen split into three sections and the addresses for each section…
... can be divided into a lower quarter containing the 16K of ... as driving or sampling data lines to transfer the byte.
lower 16K is actually broken (see ... multiplexing decisions made for the lower 16K to be made in ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... check also with permuted measuring lines.
Regards, HZJ
P ... right with the TV and color lines. Conclusion: C72+C73 are totally ...Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... check also with permuted measuring lines.
Regards, HZJ
P ... right with the TV and color lines. Conclusion: C72+C73 are totally ...THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…
... have to decide how to color it. If we use dithering ... need to modify the mountain lines so they will fit the ... I start modifying the mountain lines to better match attributes, unless ...Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…
... ULA now produces slightly shorter lines which have exactly 283.75 ... line frequency was made slightly lower (and out of true PAL ... switch - since there are 311 lines per progressive frame it takes ...Chloe 280SEHi all, Could somebody tell me how far this project is to being complete? [url]https://github.com/cheveron/sebasic4/wiki/Chloe-280SE[/url] Im ver…
... Amstrad refreshed their 8-Bit lines around 1985 and 1990 because ... to go. Move production to lower cost countries and simplify design ...Drawing a dotted line...Hi Folks, I cannot be the first person to want this (?) so here goes! Does anyone have a MC routine that does the same as the BASIC DRAW command bu…
For straight lines the whole $2382 DRAW ... $24ee CALL $22E5 with [color=green]green[/color] lines
CALL ... A
LD C, A[color=green]
ld ... ,a
call nz,$22e5[/color]
EXX
...MULTIFACE ONE, MF128, MF3Exist any detailed HW info about MULTIFACE devices ? I need info about memory size and layout, ports, memory paging etc...
... shift during loading snapshot = show color lines in border area. Now press ...New user with a dead 48k issue 2Hello all I've found my way here from watching some excellent youtube videos by Joulesper Coulomb in an attempt to fix a issue 2 rubber key 48k I bo…
... either lower or upper RAM is jamming one of the data lines ...analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …
... /> ;ld a,c ;*;delete[/color]
cp "("
jp ... name[color=blue]
set 5,a ;*;lower case ... letters (numbers unchanged)
ld c,a ;*[/color]< ...A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... 's BASIC so that should lower the entry point to making ... use 18 columns of 8x1 color.A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... use a different color attribute every 2 pixel lines, and 8x1 means ...ZX Spectrum 48K AV IssueOK so I dugout my old 48K Speccy today and decided to AV mod it. I did the mod (pretty easy) but the picture I am getting is this. [url=http://posti…
... address or data lines, either in the upper or lower RAM area ... IC's work in the lower RAM positions in another Spectrum ...ZX Spectrum 48K AV IssueOK so I dugout my old 48K Speccy today and decided to AV mod it. I did the mod (pretty easy) but the picture I am getting is this. [url=http://posti…
With the lower RAM removed, is there a ... ? E.g. fixed regular vertical lines or coloured squares that remain ... of known to be good lower RAM in place? (Sorry if ...Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... is not holding any data lines low or high.
lower or upper RAM depending on ...Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... is not holding any data lines low or high.
lower or upper RAM depending on ...Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... got one or more faulty lower RAM ICs. It might be ... and position of the vertical lines on the display. Otherwise, just ... set of 4116s or the lower RAM module that I sell ...Next step for fixing my speccy?Hi guys, I've picked up my faulty Spectrum aiming to fix it. So I followed the excellent JouledperCoulomb videos on Youtube for the basics and I am …
... got one or more faulty lower RAM ICs. It might be ... and position of the vertical lines on the display. Otherwise, just ... set of 4116s or the lower RAM module that I sell ... />
Thanks Zorn, replacing the lower memory would be my next ...RAM issue for potential 48k buy?Hi guys I've got a 48k in my sight for ?20 but... it has an issue: [QUOTE]"I tested the computer and only displayed a distorted screen. Coloured …
... anything so all the trace lines should be fine.
lower RAM ever went wrong on ...Face-Off: ZX Spectrum vs. Commodore 64I found an old oldish, but very informed and interesting article on the ole Spectrum vs. Commodore 64 argument. The article explains the technical d…
... can see in regards to color interlacing on the spectrum ... would be the saturated color palette. For most color combinations there would ... it possible to split the color attributes further with software? ... colors per line or two lines) On the spectrum this ...Face-Off: ZX Spectrum vs. Commodore 64I found an old oldish, but very informed and interesting article on the ole Spectrum vs. Commodore 64 argument. The article explains the technical d…
... it possible to split the color attributes further with software? With ... colors per line or two lines) On the spectrum this would ...
