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ALIEN (Mindgames) Bugfix and Improvement.[code]ALIEN (Mindgames) [ZX SPECTRUM] BUGFIX & IMPROVEMENT by Ersh 2016-10-29 The following bugs are fixed: [BUG] INVENTORY BUG WHEN SWITCHING …
... br />
[BUGFIX] A MISSING PIXEL ON THE MAP OF THE ... .
There was a missing pixel in the northeast corner of ... /> the wrong pointer when returning from those routines.
[ ... displayed twice in a
row.
[BUGFIX] IF ... -
Loading Images/Screens mid-gameHi all, Looking to get back into a bit of coding and I couldn't figure out a way to do the following: I have an image/SCREEN that I'd like to b…
... +1,p+1): REM copy pixel row from a$() to screen
99 ... ,p+1)=s$: REM copy pixel row from screen to a$()
2016 ... -
How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…
... then shift the graphic 1 pixel to the right and that ... print routine does not move position, we are just showing pairs ... 's on the same screen position.
when the 8th frame ... right and start the animation from the beginning. -
How to stop a flickering character erasure?I'm trying to figure out how to build a moving sprite. Eventually it will be made up of several UDG's. However its early days yet so I'm experimentin…
... then shift the graphic 1 pixel to the right and that ... print routine does not move position, we are just showing pairs ... 's on the same screen position.
When the 8th ... right and start the animation from the beginning.[/quote]
Membrane issuesHello. From the title you might be assuming that my troubles come from a old membrane, but no. Quite the opposite. I ordered a Membrane from Retro…
... to prevent the metal clip from shorting out the contacts! Make ... .
Work through each row/column combination one at a ... correct key for that matrix position pressed, the resistance should be ...im looking for a fill routine written in basici know this would be slow but i want to tinker with it to produce something else.
... your planet position and size.
Line 300 runs from top to ... bottom
Line 310 works out the position ... />
Line 330 protects us from dividing by 0 when the ... , the horizontal position always moves left at least one pixel. But the ...printing to the screen using pokei remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyon…
... br /> org 23296 ;moved from 23760
;PRINT STRING ... START+20)
;address ROW holds row (at COL+1)
COL: defb 00
ROW: defb 00
;UPDATE SCREEN POSITION
pop hl
...printing to the screen using pokei remember there being a way to print to the screen using pokes, which would allow you to print a character anywhere in the 175x255 matrix. can anyon…
... br /> org 23296 ;moved from 23760
;PRINT STRING ... START+20)
;address ROW holds row (at COL+1)
COL: defb 00
ROW: defb 00
;UPDATE SCREEN POSITION
pop hl
...Reading DEFB for backgroundsHi all I suppose the question is kind of silly but I'm a completely newbie with assembler :-S I'm drawing some side backgrounds with ZX Paintbrus…
... [code]
; ASM data file from a ZX-Paintbrush picture with ...
; block based output of pixel data - each block contains 8 ... />
;GRAPHIC DATA:
;Pixel Size: ( 72, 192)
;Char ... suppose it's y=23 row)
[/code]
Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…
... the state of some text from ON to OFF - you could ... have to have a fixed pixel start position (within a byte) for ...Z80, and 6502, in comparisonI was wondering about how each of these compared in terms of performance. The Commodore 64 had a 6502 @ 1MHz, and graphics processor VIC which took …
... 6 x 1 spaces between pixel data for multicolours.
... the colours while containing pixel data, so for example ... gaps in every other row. Doing it this way ... often see colours bleeding from objects to the left ... solid character width single pixel height line of ...Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…
... i$(TO) to preserve the position of the variable i$ in ... realise that these are distinct from LET i$="..."
Thanks for ... was remaking does plot a pixel at a time for instance ...Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…
... realise that these are distinct from LET i$="..."[/quote]
position of i$ into the variables ... have 3 blocks for each row: blank-color-blank spaces, if ... save around 10 characters per row, so around 150 characters. This ...Starwars IV opening crawl demo---------------------_______________________--------------------------- Starwars IV opening crawl demo on 128K :) [url=https://mega.nz/#!37BV…
...
offset from 0 to 7 = 8 combinations ...
num bits from 8(LINE 135) to 18 ... on X bits
from 8 bits to 18 bits ... calculate next addressOfValues (where begin the values to put on every position ...Starwars IV opening crawl demo---------------------_______________________--------------------------- Starwars IV opening crawl demo on 128K :) [url=https://mega.nz/#!37BV…
... horizontal pixel scrolls every few lines to delete a few pixels from ... a single pixel row, and a vertical scroll ... real-time with a copy from the back-buffer to the ...Starwars IV opening crawl demo---------------------_______________________--------------------------- Starwars IV opening crawl demo on 128K :) [url=https://mega.nz/#!37BV…
... horizontal pixel scrolls every few lines to delete a few pixels from ... a single pixel row, and a vertical scroll ... real-time with a copy from the back-buffer to the ...Raster effects - quick questionHi Guys Just a quick question regards what the ULA is doing as its drawing each scan line. Assuming the beam has finished drawing the border, am I…
... ULA grabs a byte of pixel data and a byte ... over again on the next pixel row, by which time you ... write the video RAM (while pixel data is being rendered). ... use the pixel-rendering time to read data from higher RAM ... draw part of the next row of colour data just ...Maze Death Race - did it ever work?As a huge Rally-X fan I was always disappointed in MDR, but I cannot remember if that was just because it was a poor clone or if it was also because …
... bit. Only that is cleared from the screen memory. It ... .
Just POKE from 32891 the new maze and ... are fixed, they must start from a free way. You ... the maze (around 6 row at the top and bottom ... etc will be placed well position by the program but if ...How to store and recall a "window"?I would like to memorize and then restore a rectangular portion of a screen, pixels and attributes. To make things easier, this "window" would be sit…
... and copied the "window" from the position where it should appear to ... -BASIC, pasting the DEFB data from the ASM file and substituting ... = 16384+37
RESTORE PIXEL
GIRO1:
Dk'tronics and other similar "add on" Speccy keyboards . What can be done with them and when?. The underlying assumption I am making here is that people who have them will want to "hang on" to them and may also want to get them working . But …
... tests for continuity ON TOP ROW NUMBER KEYS on two "thought ... continuity differences by taking readings from a meter on these two ... keyboard , I will take readings from this second Speccy keyboard ( or ... all the top NUMBER KEY position at PCB. .
KBD4 ( ...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…
... screen addresses rather than pixel coordinates so screen addresses ... from "00010000" into a screen byte "11000100". ANDing the incoming pixel ... and right one bit position until ANDing with the ... is much faster than calculating from pixel coordinates.
...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…
... got a 1 byte per pixel "chunky" framebuffer, with two ... unused bits per pixel?
I would probably ... easy to address a particular pixel; write the Y coordinate ... you want to copy from one row to another for say ... scanline at a time from one to the other ...Were the full Sinclair Loki specs ever actually known?I was just curious. A lot was leaked to the media, but the exact specs seem different depending on source. Some say it could support up to 512x256 an…
From a developers point of view, ... easier. Calculating a row using a 256/512 pixel width (or 32 ...what soldering / disordering equipment do you usemy experience with zx spectrum / amstrad cpc boards 1.cheap solder braid (not good) need to try some better, any recommendations when i looked i go…
... Duratool desoldering station (bought from CPC, [url="https://cpc ... buy branded good quality wick from U.K. suppliers. ... along each row of pins). I either position the board ... gently pull the chip from the other side. You ... on the pins, working from each end. If it ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... byte to move down a row.
If ... pixel width column and use a lookup table for row ... br />
sprite8x8a:
; calculate screen coordinate of top of ... e, (ix+3) ; e = row (y)
sla e ; e ... = screen address of top row of char
ld ...How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... byte to move down a row.
If ... pixel width column and use a lookup table for row ... br />
sprite8x8a:
; calculate screen coordinate of top of ... e, (ix+3) ; e = row (y)
sla e ; e ... = screen address of top row of char
ld ...
