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Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... Pointer:
push af
push bc
push de
push hl
push af
push bc
push de
push hl
push ix
push ... screen
push hl ;Write 8 bytes from registers
push de
push ... -
Tips on optimizing some newbie assembly routinesI'm starting to learn some assembly language. The best way to learn is to actually code something you are going to use, so I'm creating a very simple…
... 8 bytes to the screen:
push de
ld ... />
; Next character screen address:
pop de
screen address:
ld ... -
28-character wide multicolour(ish) on 48k SpectrumLong-time lurker here... I've always been interested in rainbow effects on the 48k Spectrum, mainly from a perspective of "Just what [I]would [/I]ha…
... areas of the screen by directly changing the PUSH instructions in memory ... point of the screen
PUSH DE
PUSH HL
PUSH BC
screen
PUSH HL
PUSH BC
PUSH DE
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…
... Leave some space for shadow screen buffer
20 GO SUB ...Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... using PUSH'.
; joefish's code turns half of the Spectrum screen ... /> push af
push bc
push de
push hl
push ix
push ... the stack pointer to the screen
push hl ; write 8 bytes ...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 …
[code]
; PRINT AT Y,X full screen
; Y = B-reg, X = C-reg
; 0Machine 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 …
Now with saving temporary colours
[code]
; PRINT AT Y,X full screen
; Y = B-reg, X = C-reg
; 0Howto paint a squared zone of the screen ?You know what guys ? i begin to love this languaje. Cant understand why not put more effort on the 80's to learn it :( because it is really speedy. …
... them all while printing on screen
ld hl,menuItems ... e,10 ;x position on screen
push de ;remember to draw ... de
showCursor
push de
ld h,0 ... row
.loop0
push bc
push hl
ld b ...Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…
... bc,184*256+249
; push bc
; call print_char
screen
push bc
;save off ...Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... 2 (lower or upper screen) then call 5633 to ... you can use full screen PRINT AT and it ... will set to the right screen. After the PRINT AT ... characters on the right defined screen
[code]
; ... PRINT AT Y,X full screen
; Y = B-reg, ...30-column 8x2 multicolor (even in 48K)I don't recall any 8x2 multicolor routine for 30 columns that would work on all Spectrum models (including the Spectrum 48K), so I decided to write i…
... columns 22 and 23 on screen
PUSH HL ; update columns ... 20 and 21 on screen
PUSH DE ; update columns ... 18 and 19 on screen
PUSH BC ; update columns ... 14 and 15 on screen
PUSH HL ; update columns ...Bomb Munchies - preview releaseBomb Munchies Preview release Version 12th Jan 2014 [URL=http://s979.photobucket.com/user/MatGubbins/media/bmsix_zpsc33279a2.gif.html][IMG]http://i…
... game to the title screen.
-Push Bomb power-up-
screen - have another go.
Why doesnt this work???Simple piece of code wont do as it should, just want to fill the top 22 lines of screen with an attribute value (150) but it wont have any of it. Som…
... /> push de
push de
push de
push de
push de
push ... the screen
push de
push de
push de
push de
push ...How to get Grahics to wrap vertically around the screen?I am using the following code to draw an image to the screen. First I use HL to contain ROW and COLUM I then call the MapScreenFunction As I draw m…
... draw an image to the screen.
First I use ... = display address
MapScreenAddress:
push de
ld a,l ...Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... /> LD SP,HL
PUSH BC
PUSH BC
... LD SP,HL
PUSH BC
PUSH BC
... the first column
;HL=screen addr.
;DE=address ... />
RLOOP PUSH BC
PUSH IX
PUSH IY
Fastest way to write something to screen$Hi, I just got pasmo.exe and start playing with attr scrolling, well, not scrolling, just write different values to a block and see if I can introdu…
... fastest way to update the screen. I know that ldir/lddr ... , but not sure about the push vs ld (hl),a.
LOOP
PUSH DE
DEC BC
Optimisation Needed! Is this the Fastest way to copy bytes from screen and back again?I have the screen address (say 0,0 i.e 16384) I want to copy 4 bytes wide by 32 bytes high from the screen to an area of memory. I then want to cop…
... :
di
push iy
; Draw ... ; Copy from store to the screen
ld hl ... 32
lp1:
push hl
ld ...Screen LoaderCouple days ago i find very interesting loader routine in ex Yugoslavia magazine "Svet Kompjutera" from january 1987. Authors of article, calls this …
... most impressive.
Uncompressed screen must be at 49152, routine ... /> LD HL,01343
PUSH HL
IN A,(& ... LD (IX+0),L
PUSH AF
RRR CALL RUT ... )
AND C
PUSH AF
LD A,(FL1 ... /> LD (DE),A
PUSH BC
LD BC,32 ...Push/Pop data copyingWe all know that stack pointer cheese and push/pop is faster to move data than LDIR - which in turn is slower than unrolled LDI's anyway. I rewrote …
... use push/pop, but copying a four character sprite to the screen ... takes three cycles of push/pop.
screen buffer version instead, which is ... thought. Could also break the screen buffer into 2x1 blocks and ...(part of) screen to UDGHere is a routine to copy a Y,X-position on screen to a UDG. 0<=y<=23 0<=x<=31 144<=udg<=165 (UDG "A" to UDG "U") [code] ; start code with ; PRINT …
Here is a routine to copy a Y,X-position on screen to a UDG.
0Push 'n' ChaseIt is my great pleasure and honor to announce the release of PUSH 'n' CHASE a game made with CGD featuring a wonderful loading and intro screen …
... a wonderful loading and intro screen made by the creator of ... am using the "skip the screen" option to show you all ... . Baddies can push the mines all over the screen and kill you ... Amore
Loading and intro screen, advises, critical suggestions, game testing ...SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
I've been using the SCREEN$() function recently for reading ... data off the screen rather than taking up ... fix for it. Instead of SCREEN$(row,col) use FN ... ;HL=$106E
push hl
push de
push bc
ld ...Developing "Push n Chase" into a good gameI was wondering if anyone would like to help developing my CGD "Push n Chase" into a good game. [url]https://www.youtube.com/watch?v=cdZ5XYbterc[/u…
... help developing my CGD "Push n Chase" into a ... are crates scattered around the screen, if you go over ... traps which you can push to kill your enemies. ... buy the crates (you push money bags against special blocks ... you are supposed to push blocks to clear the way ...Screen buffer Tip from Raff CeccoRaff very kindly gave me this tip: "Incidentally, I remembered a trick I used on the Z80 for extra speed: When clearing the screen buffer, it was a…
...
When clearing the screen buffer, it was actually much ... end of the screen memory area and push zero values onto ... the stack until the screen ... worked because you could push 16 bits of data ... in one push as opposed to just ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... to see if I understand push and pop when it comes ... />
LD A,5
Push AF
Ld A,7 ...
Push AF
call addfunc
ADD A,B
Push af
ret
screen address 16386
its ...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…
... /> //
// *****************************************************************************
// zxsclzf ZX Spectrum Screen Compressor
// by Tom Dalby ... to start the copy
push hl ; 11t - store hl for ...Printing text using direct screen addressingHaving some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwell…
Having some problems printing using the FASE engine which is currently defeating me. Hoping to have someone clear out the bit of fog currently dwelling in my brain for this function. I'm trying to get the text working properly in 128k mode which uses ...another nameless game...I've looked at 3 or 4 other requests for names of games and the response seems to be really good so here's hoping... i had this game where you were …
... ) at the top of the screen. You flew around a four ... -lift setup and you could push objects as long as this ...Screen$ +3 disk to tape helpHi, I have several full screen pictures of my +3 disks (Screen$). How can I transfer these pictures onto tape without losing the last to lines beca…
... />
I have several full screen pictures of my +3 disks ... (Screen$).
How can I ...Most nice Loader ScreenHi, What is the better loader screen from speccy games?? or simply which is the screen you more remember.. I remember a lot the screen$ from Roboc…
Hi,
What is the better loader screen from speccy games?? or simply which is the screen you more remember..
I remember a lot the screen$ from Robocop and HeadOverHeels.. also GreenBeret.
