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128k +2 (grey) Ear mod - New ULA and still problemsBverstee kindly sold me a 128K ula since the one in my +2 seemed to have a broken ear in. But even with the new ULA, I still can not load games throu…
if i record it, yes, no ... flawlessly to load these and if I use the function SAVE ... sound card I am using is a Soundblaster X-FI PCI-E ... signal is not the problem here. Checking input signal with oscilloscope I get a ... I know it is not a bad cap (C49 is one of those ... -
Has any one tried ZX Spectrum 4.net?In this week's Micromart, the Specccy emulator [I]ZX Spectrum 4.net[/I] is given a rave review, and it does sound really good. Has anyone tried it ye…
It really is like talking to a brick wall in here sometimes. The whole point of the 128Ke is that it runs almost everything and the user doesn't have to worry about which model to select. It just works. I'm sure the -
128k +2 (grey) Ear mod - New ULA and still problemsBverstee kindly sold me a 128K ula since the one in my +2 seemed to have a broken ear in. But even with the new ULA, I still can not load games throu…
... and not having seen the original deleted schematic, I add; V+ is input ... from EAR input port, and V- is output to Pin ... This one is faulty.
If Q2 is really a BC557 it is a pnp type ... the input. Your input line is held at about +2.5V. If you ... -
Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
This is something I've been ... , with the scaling down causing a weighting of probability.
... be to make a table of random numbers beforehand (if they are ... called for in game and speed is an ... like:
For a table of 255 values -
Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
... method mentioned by RTape where a random number is repeatedly generated until one ... take a long time to get a valid number especially if the range is small ... the large random number range 0-L. If L is not an integer multiple ... -
What Spectrum projects (Software/Games/Utility)(Hardware)(Others) are you working on?So, basically that :) You dont have to give names or more clues if you dont want to ;) Also, if you are working on more than one, you can tell all of…
... 't really be represented by a Unix
>directory ... prgname.b', '01:bytes' etc. if the user copies something without ... but if the file have number, overwrite the old one. not very ... driver.
and 'renumbering' is not a big problem, i think. -
Compliator ErrorRecenlty i downloaded a basic compliator : [URL="http://www.boriel.com/wiki/en/index.php/ZXBasic"]ZXBasic (http://www.boriel.com/wiki/en/index.php/ZX…
INPUT is not supported by ZXBC, so you must include the Input library as user ... g0blinish wrote, or write a own input routine as I did for ... br /> LET is not needed anymore, and if you use IF in the future ... , do not forget to close it with a END IF ... -
1x XC9572XL or 2x XC9536XL?I'm working on some projects which do not settle with only one XC9536XL CPLD. Main reason is of course the lack of user pins on the XC9536XL, I need …
...
There are a number of variables, so it is not a straightforward choice as ... pins? If this is the only reason, would using a 74 series ... and the cost is reasonable, it does not matter which ... PS In industry there are a number of examples of two identical ... -
1x XC9572XL or 2x XC9536XL?I'm working on some projects which do not settle with only one XC9536XL CPLD. Main reason is of course the lack of user pins on the XC9536XL, I need …
... for is the number of simultaneously switching outputs. If you have a lot ... is not a new problem, and although having a ground and a power plane is ... or fast switching chips. If the ground or power tracks ... multiple via's.
If you have problems routing ground ... -
Someone just gave a 1 to everything I madeIf you take a look at all the titles I am involved with that are hosted in the archive, you will find that someone gave a 1 at everything that I made…
... surprised - delighted but surprised - if it is truly a better game than Myth ... that, not taken too seriously, the voting process is generally helpful ... shows that really we need not have bothered as the ... (numbered left), whilst the number to the right of each ... -
Is This PSU Useable on the Speccy?I just got my Speccy and the PSU has had some 'work' done to it. Somebody has added an extra length of cable on it but rather than soldering or crim…
... Wouldn't surprise me if this is part of the reason ... the fact that the input voltage that is playing a big role. Years ... in some residential areas are not regulated by means automated ... measure under load is not a straight DC line, but a waveform where the ... -
48k Rubber Key Spectrum ProblemI'm testing my mate's spectrum that hasn't been used since the late 80's. Unfortunately, it seems to keep randomly resetting itself (like pressing th…
... need a few power-ups to start working if the unit was not ... switched on for a long time ... disappear after a few power-ups. I have not taken a close look ... as the RAM matrix is just a number of elements that needs to ... -
Books that you just can't quit.Much as parts of the presentation,writing style infurates me, there is a book I just keep comming back to again and again. Its like the Yang to the …
... 1049 REM P is pointer to segment which is to be ... movement variables so that worm is going down.
... 0
1210 INPUT (I$+" "); LINE A$
1220 GO TO ... br /> 2009 REM this is played when you go ... br /> 3009 REM if it's not a growth segment then erase ... -
display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... their movement, although it's not a very good one; it returns ... [B]LD A,R[/B] is not a good choice for random number generation (except ... ]X[/B]. If [B]CALL z,FRAMESinc[/B] is not invoked in first ... iteration (since there's only a 1 ... -
Poke 23755 & 23756Entering the following few lines of BASIC: [IMG][URL=http://s1286.photobucket.com/user/rebelstarwac/media/Poke1_zpsc2845838.png.html][IMG]http://i12…
... line 10, the next line number is still 5, hence you now ... line. If you edit a program and insert a line with a number between two ... /> So this is why a loop takes longer if it is not located on the ... -
Rendering clipped glyphSometimes you need to render a glyph of arbitrary size to the screen. And clip it. For example: drawing a mouse cursor means combining drawing of a…
... final device driver through any number of buffers, filters, whatever ... list. The linked list is not a traditional one but one that ... This time the linked list is a list of clipping primitives ( ... is an IRC client with conversation in top window and character input ... -
Timex 2068 hi-color / hi-res modes.Hello. I know this is not a Timex forum but since it is a very close relative of the Speccy I thought I'd ask my question here. Does anyone know …
... . This is not a spectacular demo, just something hacked together to see if the ... At that time, it was not. Under TS2068 emulation (ie 60Hz ... every second.
There is a current port of sp1 for ... [/URL]. Click on the revision number of the tap file(s ... -
Collision Detection in SP1Hi, Does anyone have a well-documented example of using collision detection in spritelib. I've search WoS and Z88DK forums but no joy. Something wi…
... a,a ; multiply by 8
add a,a
add a,a
add a,(iy ... ?
jr nc, nocollision ; if not, no collision is detected
; see ... -
Cross platform developmentI'm just vaguely considering supporting a few more retro 8 bit platforms for something I have in mind to do. Just Z80 and 6502 really, but that cove…
... the buffer
; if radix is 10, the number is treated as signed and ... asm_itoa ;; inform the linker this is a library function
ld ... the 6502 community, whether or not it is currently maintained.
128K RGB Display problem.I have just got my hand on a toast rack, but when powered and connected to the telly the picture jumps horizontally at random intervals. Could it be…
... .
To ensure a TV switches to RGB input mode, pin 16 ... may switch off the SCART input.
Things you can ... are using RGB). If this is not possible, or does not work...
Open your SCART lead and see if there is a ...128K RGB Display problem.I have just got my hand on a toast rack, but when powered and connected to the telly the picture jumps horizontally at random intervals. Could it be…
... .
To ensure a TV switches to RGB input mode, pin 16 ... may switch off the SCART input.
Things you can ... are using RGB). If this is not possible, or does not work...
Open your SCART lead and see if there is a ...Elite Kickstarter ProjectAs some of may know Steve Wilcox of Elite is currently close to raising ?60k via Kickstarter to begin manufacturing a USB spectrum keyboard. I have g…
... my pledge to a pound. I've got a number of real spectrums ... so perhaps I'll have a go ... idea if it is not for cramming a Spectrum clone inside, c'mon a speccy ...IF1Bis problems. The Edge of the Spectrum...Advice is sought from the learned on WoS. I just bought an Interface 1Bis from sunny South Africa. It arrived fast, but unfortunately doesn't work.…
... />
By the way, this is not a question about hardware but connected ... if you are happy with the way everything is working then there is ... 9 bytes larger.
If you start reading from section ...
1 N Number array ZZN
2 A String array ZZA ...We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…
... 6 in mind. There is a chip with the same ... ZX edge connector. So if we upgrade the chip we ... design.
VGA is not a problem. We have expansion port ... joystick port has only input pins so it won' ... an earlier prototype but is not easy to port because ...dumping protected BASIC loadersI wrote this a few weeks ago but forgot to post it. It will load & list from tape/TAP/TZX any BASIC program which has been saved with SAVE, including…
... [*]Line 20: Print the line number & (alleged) length; skip ... br /> [*]Line 25: If the byte is a number marker, convert the following ... br /> [*]Line 26: If the byte is not a print control code, print ... v$ containing the visible number in 'value' and then ...How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... them to hex but if you look at old ... memory addresses though there is no conversion from decimal ... [/CODE]To me, the first is meaningless digit soup (I'll ... from hex - 48k is just not a number I remember at all)< ... of zealot :lol:
If you want to use decimal ...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…
... program should be in a loop waiting for input from the keyboard ... .
So either the CPU is ... the data bus, or there is a faulty RAM. Any of these ... the Spectrum?
If it is not socketed...
... What display do ...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…
... program should be in a loop waiting for input from the keyboard ... .
So either the CPU is ... the data bus, or there is a faulty RAM. Any of these ... up the Spectrum?
If it is not socketed...
... What display ...
