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Fancy Becoming The New 8-Bit Challenger To Zeus?! :-DHi to all that know me and follow my youtube channel "Zeusdaz", and of course a merry Xmas and new year to everyone! It's time for a new player to…
Hi to all that know me ... merry Xmas and new year to everyone!
It' ... time for a new player to take part in my "8 ... youtube "unlisted" video to my spare email address "ice8629@yahoo.co.uk ... " of a responce to the ... -
problem with symbol shift and caps shift key combinations on multilayer keyboard membranesHello, I know, it is generally know that some ZX Spectrums with multilayer keyboard membranes have problems with some key combinations. Typically …
... membrane, on devices connected to address bus (electrically signals are ... discovered it depends on address where is instruction in ... similar code somewhere around address 51300. I make some ... ports in 512 squares (character/attribute positions).
... -
JSW Central - a website dedicated to Manic Miner and Jet Set Willy games for the ZX SpectrumAs the 35th birthday of "Jet Set Willy" [url="https://www.playexpomanchester.com/news/matthew-smith-joins-us-at-play-expo-manchester-for-jet-set-will…
... provide fun and interesting challenges to the "mainstream" ZX Spectrum ... website dedicated exclusively to these games. It aspires to list all ... provide comprehensive and up-to-date information about MM ... figure of Willy and the address of JSW Central. Please ... -
Is it possible to run a single BASIC line via a ROM CALL of the Standard ZX 48k ROM?On: https://cygnus.speccy.cz/popis_trdos-assembler.php I found the following code: [code] CHADD equ 23645 ; Location of SOS variable CHADD ld…
... (CHADD),HL ; CHADD now points to our routine
call 15619 ... chadd
jp BACK ; Jump to program point from which the ... ; the above with just the address
ld (CHADD),HL ; changed ... /> BACK ld HL,(TEMP) ; Start to restore CHADD
ld (CHADD ... -
Adding features to the "ZX Spectrum" 48K with the "SPACE MISSION 2020" cross-boardCross-board prototype "SPACE MISSION 2020": [url=https://pic.maxiol.com/?v=1577625334.628204558.img20191229181353.jpg&dp=2][img]https://pic.maxiol…
... :
1. Memory expansion up to 128 K.
2. Musical ... /> 3. "METEOR-2020" graphics card to eliminate attribute clashing. -
type in to learn about IM2I'm trying to mess around with learning about IM2 and I found a nice little article in Sinclair User September 1988, issue 78, Page 70-71 [url="https…
I'm trying to mess around with learning ... I haven't been able to figure out what it ... ld (HL), $57 ;;color of attribute different
ldir
ld ...
I am using PASMO to compile it with the string ... is going wrong and how to fix it.
... -
Textured Scanline Flood Fill for ZX Spectrum 48KPity that it's quite hard to contribute code to WoS in a straightforward manner. Recently, I have created a textured/hatched fill M/C routine for the…
... it's quite hard to contribute code to WoS in a ... I pimped a bit to support textures and color.
200 REM Coordinates to start fill
210 POKE ... higher byte
360 GO TO 400
370 REM ... NEXT n
9080 GO TO 9020
9100 ... -
Keyboard Encoding. Would like to gather thoughts on it.Hi all, I've almost finished the first part of my open-spectrum design, and wanted to bounce one of the ideas I'd incorporated off people prior to…
... of the 8 upper address lines can be scanned ... spectrum to the keyboard, that encodes the selected address line ... but the upper 8 address lines would be 3 encoded ... me recode the upper address line select at the ... active more than one address line so that it ... -
is it possible to connect an alphacom32 printer to a serial or parallel port?ive heard that the zx printer uses only 4 data lines. IORQ, RD, WR and address A2. im assuming that these are the same as the alphacom. i know you wo…
... lines. IORQ, RD, WR and address A2. im assuming that these ... know you would probably have to convert the signals. any ideas ... ? id really like to use this printer with a ... pc, without having to have a spectrum to use it. -
boot fail .. bad address lines A7,A12,A13anybody have any ideas what could be wrong with this specie issue 3B .. work done : removed rom, upper ram & logic put lower ram multiplexers in sock…
... ...checked all the data & address bus lines from cpu on ... .. A7,A12,A13 all seem to be stuck low .. when i ... like lego bocks and reports address error.the text is also ... -
Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all, I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy ) and also t…
... get the internal MMU to handle the pages however ... ( 256x192 or 512x192 ) to occupy the lower 48K of ... typically sit from 4000 to 7FFF, while paging the ... allow the video card to have two separate screens ... What are the best ways to address this? Has anyone every ... -
Fighting Warrior's protection systemThis is one of those bizarre cases where cracking the loading system is orders of magnitude more fun than playing the game. (Indeed, discovering I wa…
... variables, sets up ERR_SP to point to the BASIC calculator's workspace ... off tape for a screen address, then 8 bytes for that ... byte for the attribute. This allows the screen to be drawn in ... it [i]again[/i] to jump to it. The copying routine takes ... -
Easiest way to figure instruction lengthGiven a start address, what is the easiest way to find out instruction length at that address in Z80? I found [url="http://www.z80.info/decoding.htm"…
Given a start address, what is the easiest way to find out instruction ... length at that address in Z80 ... ]. Is there an easy way to do it, without table of ... -
Built a ZX Spectrum that works, but can't get the upper RAM to work?Like the title says I finished my Spectrum 3B board, and it boots, but it doesn't see the upper 32k of RAM. When it boots, the lower 16k works f…
... But the program seems to know that it's there ... logic, and I seem to get activity on A15 with ... 'm only getting .01 to .02 volts with a multimeter ... 85, 170, and 0 to that address, but PRINT PEEK returned 85 ... addresses above 23733 (from 23734 to 23740) and got 244, ... -
Was Palpatine trying to SAVE everything?So almost every Jedi was killed because Palpatine tried to execute the order 66. 66 is the hexadecimal address of NMI on the Z80. The clones were …
... to execute the order 66.
66 is the hexadecimal address ... of NMI on the Z80. The clones were "hardwired" to ... it possible that Palpatine tried to save the status of their ... many robots but forgot to put the right ROM o ... -
Exact emulation of the Snow effectAs the original post on another forum is outdated, and for those who don't know about that forum, I duplicate this info here: At the beginning of …
... the high byte of address, points to an address in the slow memory ... a row address (bits 13-7) which can point to a pixel ... byte and its attribute. The first ... first pixel/attribute burst, the CAS asserted the refresh address, so you ... -
PAW questionThis may not be the right place but anyways there it goes: I've been trying to figure out how to import graphic files in .SCR format in the PAW parse…
... determine the adress to jump to. In decimal the address is p*256 ... pq will need to be a fairly low address before the start ... of the adventure data to point to ... br /> LD DE,22526 ; point to the attribute memory
LDIR ; continue ... -
ScrollingBit of a daft topic but anyway... Which game had the best scrolling? I would have to volunteer Commando and its silky-smooth scrolling. A particula…
... de,04000h ; first pixel line address in hex
... address representing
; screen data from left to right, top to ... segment do nothing - the address is correct already
... the attribute map
; to decide on when to scroll the attribute map ... -
Spectrum helpHello all I run a website which is some sort of community/game information hybrid. It's dedicated to most gaming platforms (currently 62 of them). I…
I think you fail to note the significance of ... 8bit processors with 16bit address lines can only address 64k of memory ... Amstrad took over - which led to signifcant incomptabilities in software which ... in a certain way (the attribute port for example).
The ... -
Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…
... to copy the links and paste them in the address ... Spectrum 128, with 8x2 attribute cell size (Such a ... /> I showed those pics to jonathan cauldwell. he got interested ... . you may want to talk to him, as he' ... upon generating it explaing what to do to load it.
Speccy machine code info where is it?Recently I've been trying to learn Z80 and I've managed to make limited progress (some of my routines even compile now!) but I seem to be having trou…
... I use:
Screen Address (16 bits)
010B BSSS ... : 000BBLLL 0-23
Attribute Address (16 bits)
0101 10BB ... , the screen display is easy to understand.Editing in-game UDG'sI have just started playing an RPG that was in Sinclair User in 86'. The game is called Forest of Long Shadows and was excellent. You can find it on …
... baddies is the character's attribute data ie. strength, dexterity, ... ...
FOR n =52049 TO 52393:READ etc..........
< ... of chars. : 43
from address : 52049
then ... b) overwrite the line numbers to match the program itself before ...Editing in-game UDG'sI have just started playing an RPG that was in Sinclair User in 86'. The game is called Forest of Long Shadows and was excellent. You can find it on …
... baddies is the character's attribute data ie. strength, dexterity, ... ...
FOR n =52049 TO 52393:READ etc..........
< ... of chars. : 43
from address : 52049
then ... b) overwrite the line numbers to match the program itself before ...C64 & Spectrum loadingscreens!I was bored today, so I decided to compare some stuff. :) [url="http://www.lemon64.com/loadingscreens/"]http://www.lemon64.com/loadingscreens/[/ur…
... simply impossible to change the colour of an attribute square quickly ... pixels and a single attribute byte for the 8 ... , with DRAMs the memory address is split in half, ... and a full 32 attribute bytes into a buffer ... frozen if it tried to access video ram while ...Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... that its z80 can only address 64KB at a time with ... 16 address pins. 2^16=65536. Dec. 0 to 65535, your ... , Philip Kendall wrote:
To get back to the original topic: FLASH ... to have 3 colours, preferably four, or 3colours and one obligating attribute ...Any Errors?Any errors you feel Sinclair Research or even Amstrad made with the speccy??
... trying to add these features to it. that's the response to ... a reasonable suggestion as to an alternative to paging that would ... you're saying being able to address memory linearly would be simpler ... such concepts as not having attribute squares or having more ...Memory Available for 16k and 48kAm I right in thinking that if I am writing a 16k Game, I have 8k available for the machine code prog 6000h to 8000h, and for a 48k game I have 40K a…
... PRINT USR 23296 and reset/attribute color changes etc. I ...
If you want to stay out of the way ... Basic, set RAMTOP to the lowest address needed by your program ... you can't CLEAR to a certain address, Basic can't ... and you'll have to resort to a machine code ...Spectrum programmingI have a Spectrum+ at home. I tried to write some programs in BASIC (IIRC i wrote a breakout clone in which you had to hit those spider-like characte…
... which there is an attribute overlay for each 8x8 block ... lines. Instead 4020h refers to line 8 rather than 1 ... if you stored the address in HL then an ... ), rather than having to add 20h to HL. This produces ... a certain frequency in order to produce a tone.
...128k Shadow Screen?When emulating the shadow screen in bank 7 should that bank be switched into address C000? If so, what happens if bank 7 is switched out without canc…
... to requests based on what's coming in on their address ... how the address buses are conncted to each other ... LD from a memory address takes at least 7 ... can load a screen attribute byte and a byte ... doing a memory fetch to register (presumably). Instructions ...New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... br /> -------------------
To prevent "Program: foo" or "Bytes ... print output is to be send to the printer. A ... mean it is to be sent to the TV screen ... /> Keeps track of the address on the machine stack where ... the same again to get back to normal L/C ...
