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SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... /> pop hl ; return address to HL
ret z ... restore VDU flag
ret ; and return
; ... _vdu_flag), 1 ; signal lower screen
call in_item_1 ; ... hl ; store it in x-ptr
call ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... of abs x or abs y to H
ld a, h ; and to A ... A
ld hl, vdu_flag ; address VDU flag
ld d ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... call set_init_pal ; set palette and clear screen
res 5, ( ... (iy + _flagx), l ; and flag x
inc hl ; LD ... pop de ; unstack address
and a ; clear carry ... add hl, de ; channel base address to HL
; ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... _x_ptr_h), 0 ; clear x-ptr
ret ... cls_lower ; clear lower screen
res ... to HL
call number_1 ; skip line number and address ... -
FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... + P_COL) ; l = x coord, h = y coord
... 192 ; will char draw off screen?
jp nc, error_zc ... has screen orientation with y=0 at bottom and y=191 ... at top. This test is specific to ... -
FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... _fzx + P_COL) ; l = x coord, h = y coord
... 192 ; will char draw off screen?
jp nc, error_zc ... be 193 and not 192 there to check vertical y coord. ... with colour support and xor mode. And fixing the 184 ... -
****ing Awesome Spectrum Engine (FASE)This is a new engine (sprites, tiles, map) for all ZX Spectrum machines. The engine set ups a runtime enviroment that leave between 24K and 30K byt…
... future: skiping Y coor tables and move sprite info from $5c00 to $5bc0 ... 0
5b00 number of screen to paint
5b01-5b96 ... info (number of sprite, X coord, Y coord)
5c40-5c4f ... info (number of sprite, X coord, Y coord)
5c40-5c4f ... -
Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... takes 0.48 second to display that pattern.
to be in array p$()
y,x
push hl
x,y screen address
ld b,a< ... -
Loading AGD games into AGD to check codeHey there Not sure if this is quite the place to put this but it covers both Jonathan's AGD and Spin and is a question about developing my AGD game.…
... .g. BASIC loader program, loading screen etc.)
Also remember ... mostly developed with AGD 2.x and their code won't be ... tool shed on my PC to avoid losing the possibility of ... modifying my games prior to Cronopios Y Famas, which was developed ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... however.
To make things easier, let's ... of things actually present on screen:[/B]
In ... nr,tile1 X,tile1 Y
tile2 nr,tile2 X,tile2 Y
.....< ... through these data, read coordinates and draw tiles until you meet ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... x), B with row(tile y)
call get_screen_location ; HL now contains screen ... position to print ... screen position to print the block at
ld a,b
and ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... x), B with row(tile y)
call get_screen_location ; HL now contains screen ... position to print ... screen position to print the block at
ld a,b
and ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... x), B with row(tile y)
call get_screen_location ; HL now contains screen ... position to print ... screen position to print the block at
ld a,b
and ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... be
INK (foreground) and PAPER (background) colours on the ... 's:
PAPER colour x 8
plus
INK ... /> bright = 64
[0 x 8] + 4 + 64
to calculate the attribute screen address. This is the ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... x), B with row(tile y)
call get_screen_location ; HL now contains screen ... position to print ... screen position to print the block at
ld a,b
and ... -
Tile routinesHi all, Please does anyone have any examples of tile routines in pure asm to set up maptile screens. I would like to try and understand them and ti…
... of data, finish and return to BASIC
cp ... x), B with row(tile y)
call get_screen_location ; HL now contains screen ... position to ... attribute co-ordinates on screen
ld a,(de ... -
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.…
... equivalent to loading bars around the GBL interface screen for some time and ... complete e-mail address as password.
230- Welcome to
230 ... Goodbye.
ftp> !7Za x FtpDl.zip -aoa > FtpLs ... -
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.…
... equivalent to loading bars around the GBL interface screen for some time and ... complete e-mail address as password.
230- Welcome to
230 ... Goodbye.
ftp> !7Za x FtpDl.zip -aoa > FtpLs ... -
Help needed with calculating screen addressesCan anyone help me finally crack Jonathan Cauldwell's screen addressing calculator and, more to the point, is the reason I'm struggling because this …
This seems to have been edited and taken out of context. For ... , x refers to the VERTICAL distance from the top of the screen and y to the ... -
DIM and FOR, NEXT loopHi there. I'm making a program with 100 items on screen using dim and a for next loop. The thing is, each time I want to manipulate the items I do an…
... with 100 items on screen using dim and a for next loop ... for g=1 to 50: if x=e(g) and y=f(g) then ... have 50 rocks and 50 diamonds and can fall and the rocks ... for g=1 to 50: if x=e(g) and y=f(g) then ... access with peek and poke because they compile to faster code. -
Beeper and Sprites at the Same Time?[URL="https://drive.google.com/file/d/0B6XhJJ33xpOWX1pQLS14RnppNFE/edit?usp=sharing"]Why not?[/URL] "q" for quit "m" to change sprite mode any other…
... a screen like that, paint out objects with attribute squares and tag ... cell (X) off] and
| | | [turn cell (Y) on] -- [I]player moves to adjacent ... trigger events for game objects to move, and a faster clock which ... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... screen is actually pretty slow! I tried moving a 2x2 character, and ... knocked this up and although it flickers a ... some error checks and reactions to attributes and it's probably ... But add another sprite and some AI then it ... 101 PRINT AT Y,X;a$;AT Y+1,X;b$
... -
Fast and easy read/write of attributes?What are the fastest or easiest ways to check the attributes of tiles on the screen, in BASIC? It seems to be a great way of storing object info. …
... 7:
FOR y=1 TO 20: PRINT AT y,1;TAB 31 ... : NEXT y
10 LET X ... )-(x>1) AND i$="o")-((28 AND x=29)-(x1) AND i$="q")-((18 AND y ... =19)-(y -
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…
... the most logical and simple way would be to just basically SET ... routine could be easily adapted to do this (if I could ...
plot x,y
Calculate next pixel address
plot x,y
over ... 1
plot x,y
Change PAPER and BORDER colours from machine codeHow do you go about changing PAPER and BORDER colours from machine code? I've forgotten the system variables for border and paper.
... hard. You can watch a SCREEN$ loading to visualise the pattern. Try ... are 256 characters (32 columns x 8 rows).
First comes ... one character to the right you add one to the address (and so long ... a chunk) you add 32 to the address. But because you may ...Slap in the face for modern gamers number 45,107As you probably know, Gamestop (an American video games retailer chain) has plans to offer exclusive gameplay/game sections in AAA games, which is ap…
... bought [game x] and it doesn't support [feature y], that's ... same one) that I want to address. One is that the public ... to distinguish things. And they really do have the ability to learn not to ... .
And perhaps it's interesting to know, that even ...Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... a routine to draw a filled rectangle on the screen. Whilst reading ... I came across the partical screen clear routine.
Here ... is to be able to supply the x,y,h,v and attribute value to use ...Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…
... when you'd want to copy individual lines and that couldn't ... the Y screen address ( I think 6 instructions shorter )but you still need to ...Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…
... the Y screen address ( I think 6 instructions shorter )but you still need to ... have a character-arranged screen, and you wanted to scroll it horizontally, ... , then move on to the next character and repeat. Adding an ... then you'd have to correct H and INC L after ...
