... iy + _vdu_flag) ; signal lower screen
call cl_line ; clear ... iy + _vdu_flag) ; signal main screen
set 0, (iy + ... sub (iy + _s_posn_h) ; on screen?
jr nz, auto_l_5 ; ...
; THE 'PRINTING CHARACTERS IN A BASIC LINE' SUBROUTINE ...

... entire screen but they are limited to monochrome characters. ... B]bicolor[/B] graphics everywhere* on screen.

In ... ]"btiles"[/B] anywhere on screen (even partially hidden ... screen" is not exactly accurate. The engine available area is 30x22 characters ...

... The engine divides the screen into characters which are sometimes called ... characters and how the sprite graphics will be drawn on screen ... graphics for pixel precise placement on screen.

Sprites ... can have 100 sprites on screen but if they never ...

... rotated before drawing the spillover characters. By default they are set ... to the sprite's individual characters. Mask sprites are the ... level, modify how each char on screen is drawn (what is done ... always generate the z80 libraries on your local install by ...

... sprite can exist on more than one plane on screen, at character ... associated with individual sprite characters but this function deals ... , OR, LOAD, etc, characters). This draw function draws without ... . This draws the sprite characters in this column, making ...

... /> Let's call the characters in the first column 'A ... ' and the characters in the second column ...
The sprite is drawn on screen like this:

... with the extra column on the right holding the ... If they always move on exact char coords one ...

... it select an image depending on its current state. I have ... the character coordinates it occupies on screen.

IF the ... sprite is entirely on screen you can force a redraw ... br />
Iterate over the characters in the rectangle and call ...

... big and limited for 256x192 screen.Also, we can use regular ... game just update bitmaps directly on screen without changing attributes.

... game just update bitmaps directly on screen without changing attributes.[/QUOTE]

... a variant that draws bicolor characters instead, contact me also ... . For each character position on screen, we would need to ... new datatype for "bicolor characters" that would contain both ... variant that draws bicolor characters instead of btiles during ...

... . For each character position on screen, we would need to ... of background (12-14 characters for 3x3 object, 20- ... the 3 or 4 characters along the edge of the ... a background colour from the screen, mask off the PAPER ... engine like this, why on earth would you want ...

... necessarily the next place on the screen that you would ... of the first row of characters, the next 224 do ... on the 3rd pixel row of the first line of characters ... and so on

So ... , before you see it on screen, see if you can ...

I wouldn't recommend changing from fatware to esxdos, but...< ... AFTER load and BEFORE flashing) on screen. Flashing a new firmware overwrites ... /> Also, ESXDOS keep some data on the flash card. Maybe you ...

... and prints them onto the screen one by one.

screen (column 32), row (y) is ... , you could print the four characters in this order:

on screen. Also, if you end up ...

... and PAPER (background) colours on the Spectrum:

screen address. This is ... containing attribute co-ordinates on screen
ld a,(de ... it in the right place on screen[/code]

... be bothered changing this now..;-)]

... (hl), a ; put A on screen
dec l
... (hl), a ; put C on screen
dec l
... (hl), a ; put A on screen
dec l
... XOR to erase single characters, go ahead and make ...

... 's not clear that the screen wraps top-to-bottom (but ... he just placed blocks randomly on screen and was really really lucky ... "pass by", so they keep changing as enemies move around. Also ... elements. It's a small screen and the player can always ...

... ;766132]the standard to do on c64, is just change the ... assuming you can do that on speccy due to aquaplane etc ... three frames to play so changing border colour will not tell ... too much t-state usage on screen? [/QUOTE]

50fps very ...

... UDGs is that SCREEN$ will recgonise your redefined characters; it won't ... those C64 type effects on it's screen. (Though those hi-res ... UDG from a character square on the screen, you need to work ... address of the top byte on screen, then copy it to the ...

... with these (changing to 1uf can help resolve certain patterning on screen, have ...

... with these (changing to 1uf can help resolve certain patterning on screen, have ...

... and the standard Spectrum palette on screen at the same time. The ... it on or off or changing colors) will affect the whole screen every ... /> Line 20 prints "Hello" on the screen in dull red.
... the same program. Just not on screen at the same time using ...

... and the standard Spectrum palette on screen at the same time. ... it on or off or changing colors) will affect the whole screen ... same program. Just not on screen at the same time using ... and standard Spectrum colours on the same screen simultaneously?

... =Renegade;783084]Ok, picture of screen display is white border and ... , which of course never appears on screen.
Seems a boot that ... display in mind; one of characters each 8 pixels wide, can ...

... of it while it is on screen (it disappears after hitting three ... particles, and scroll it depending on the ship's change of ... as well as changing its direction, curve's center on the starfield ...

hi I have altered the demo to enable a sprite to be moved around

[quote]
/* ----------------------------------------------------------------
* NIRVANA ENGINE DEMO - converted to z88dk C Compiler
*
* This program can ...

... it never draws intermediate results on screen. To accomplish this it ... about all backgrounds and sprites on screen.

* It is ... by only drawing changing areas of the screen (this also means ... an area that is changing) 2- screen areas are only drawn ...

... , and provisioned space on the screen for the counter, ... the loader, saver and screen dependencies.
When ... loader (60000) is displayed on screen, and that this is ... also prompted with "User Characters Y or N ?"
Characters so press Y.

... ? Referring back to what's on an Alkatraz tape the simple ... the error message and switch on the user defined character set ... where the message should be on screen and it's colour etc ... we want to use User Characters Y or N ? - we do ...

... . Those characters do not have to be placed rectangularly on screen - they ... chars horizontally will appear vertically on screen), and otherwise arrange the ... and then place them on screen as your game needs ... don't use 256 tiles on screen, you can reclaim some ...