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Creating a Spectrum game that won't load...Dear All, I have recently been using my ZX Spectrum as a reference for the production of a new body of art work and something I keep coming back to …
... SPIN v.0622 (with the character set in ROM) showed only ... )
LD IX,15616 ;start (16384 for screen)
LD ... -
Three Word Story 10,000 posts!!Wow the three word story celebrates its 10,000 post. Little did I know all that time ago it would go on as long as this. I thought it would only be …
[QUOTE=Scottie_uk;422927]Well I suppose we do have to figure the WOS post maximum character limit.[/QUOTE]
From one of ewgf's posts I think I learned that the limit is 16384 characters. A nice number in many ways! -
Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…
...
; exit : HL = moves one character down
; used : AF, HL ... .
FillScrLines:
ld hl, 16384
ld b, LINE_CNT
Resolution & Memory Question ...Hi, I'm hoping someone with some experience writing an emulator, or a vast knowledge of all things Spectrum can help me answer the following questio…
... />
The next 16K (addresses 16384-32767, 4000-7FFF) is ordinary ... /> The screen starts at 16384 (4000). Addresses 16384-22527 (4000-57FF, 6K ... used for some user-defined character images. When a machine code ...'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
... for the Spectrum's character set. Each character's bitmap uses 8 ... starts at location 64*256 = 16384. When the MSB is 64 ... top scan-line of whichever character square you're writing; increase ... next_scanline
; Done one character; now move to the next ...multicolor on 48Kmany people tried multicolor 8x1 on 48K model and ended with maximum width about 18 chars. yesterday i tried [b]8x2[/b] on 48K and achieve 24 char wi…
... of 16384 pixels in true high resolution color, located in any character ...Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... a character position on screen.
[CODE]LET sa=16384+32 ...Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... a character position on screen.
[CODE]LET sa=16384+32 ...ccompletly baffeled machine codeHi everyone, BEFORE you ask i have not asked help for loads of problems i have recently now encountered and i figured the problems out myself, hones…
... doesn't have the usal character-based screen that other computers ... ] ld hl,16384 ;screen address - 1st byte of "character" 0,0
Character "A"
inc h ;move ...The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... /> [code]
Z80: ld hl,16384 ; Load with...
x86 ... : mov ax,16384 ; Move with...
68K ... : move.w #16384,d0 ; Move to...
[/code ... flip, sprite priority etc. Each character consists of 16 colours defined ...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... br />
cls ld hl,16384 ; Screen address
ld bc ... and a,11111000b ; Calculate X character offset
rrca ;
...
lpt defw 16384+(32*0)+(256*0)
defw 16384+(32*0)+(256*1)< ... br /> defw 16384+(32*0)+(256*2)< ...Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... />
11 01000011b : "C" (10 CHARACTER FILENAME 255 = NULL)
11 ... /> 11 01000000b : 64 (ADDRESS HIGH) 16384
11
22
zxwav /c 16384 URIDIUM.SCRLearning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... br />
cls ld hl,16384 ; Screen address
ld bc ... and a,11111000b ; Calculate X character offset
rrca ;
...
lpt defw 16384+(32*0)+(256*0)
defw 16384+(32*0)+(256*1)< ... br /> defw 16384+(32*0)+(256*2)< ...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... />
cls ld hl,16384 ; Screen address
ld bc ... />
and 11111000b ; Calculate X character offset
rrca ;
rrca ... ).
lpt defw 16384+(32*0)+(256*0)
defw 16384+(32*0)+(256*1)
Help?Hi All, I wonder if anyone has a few minutes to look at this bit of code I'm working on. I'm trying to move to sprites and want to do it with a scr…
... ,bits ;reset bits (lines of character for next from top
inc hl ;character moving down, increase twice for ... , table below
screen defw 16384 ;row 0 (first segment 0 ...Sprites masterclassHi All, You guys are probably tired of explaining sprites but I'd like to clarify a few things if possible. I've sorted the vertical aspect of scro…
... ,bits ;reset bits (lines of character for next from top
inc hl ;character moving down, increase twice for ... table pointer
dec hl ;character moving up, decrease twice for ... , table below
dn defw 16384 ;row 0 (first segment 0 ...Simple SpriteHow do you draw a sprite on the screen? For example i want to draw a smiley face sprite and would like either a link to a tutorial or a very well com…
... location 16384.
2) Evolve (1) to work for any character ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... />
He is converting character coordinates to an attribute address ... overlay, one byte per character square and occupies addresses 0x5800 ... this simple program: for z=16384 to 22527: poke z, ... fastest changing thing is the character column CCCCC, the next ...Newbie says 'Alreet?'Hiya dudes, Just dropping a line to say hello as i've decided at 33 to try and fulfill a long time ambition to write a speccy game in machine code..…
... this simple program: for z=16384 to 22527: poke z,255 ... each of the top 8 character rows (total 256 bytes). Then ... rows, etc until top 8 character rows are filled (=2048 bytes ... , and bottom sets of 8 character rows (=total 3*2048=6144 ...Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... :
[CODE]draw_face ld de,16384
ld a,0
[CODE]draw_face ld de,16384
;I'm going to ... /> ;it. However, if the number 16384 (#4000 in hexadecimal) means ABSOLUTELY ... data (which is basically one character just like PRINT....or RST ...How to safely maximise available memoryHi All, I'm toying with an idea that will require I have as much memory available as possible. I'm a little embarrassed I have to ask this tbh. As…
... also an almost full ASCII character set squeezed into those text ... SCREEN$ and use 'PRINT USR 16384'4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…
... appears after the command POKE 16384,255 and the display otherwise ... as: the top byte of character location 0,0 never gets ... in other positions in this character location), but frequently appears at ... the top of character location 0,2.
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 …
...
di
ld de,16384 ;screen address
ld bc ... /> add a ;x2 for text character range (#20-#7F), this is ...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 …
...
di
ld de,16384 ;screen address
ld bc ... /> [B]; not needed, always 1 character to print![/B]
[B ... /> add a ;x2 for text character range (#20-#7F), this is ...80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... in at 16384 to provide a complete set of character definitions for ...80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... in at 16384 to provide a complete set of character definitions for ....chr to .binSo here goes another stupid question. What's the best way to convert .chr files created with ZX-Paintbrush to binary or asm format? I know ZX-Blocked…
... had support for 8-bit character set printing for a long ... a completely new 1792 byte character set definition is in 80 ... the area immediately after the character set is available and you ... 1K definition file in at 16384 for whatever code page you ...40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... af ; temporarily save the called character
ld a,(atflag) ; are ... /> pop af ; restore the called character
cp 13 ; is it ... d,0
ld hl,16384
add hl,de
next pixelI searched the "Discussions" groups for the phrase "next pixel" and got no matches - and removing the quotes it discards the "next" and just searches…
... the name.
zx_cyx2saddr = character y,x coord to screen ... /> screen address = pixel display address 16384-22527
attribute address = attribute ... y coord = 0-191
character x coord = 0-31
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…
... the Display file, from addresses 16384 to 22527, which stores a ... the paper colour of one character square to blue.
- draw ...
