... bottom of screen
;
; On entry, A=character to print
; On exit, A/DE ... (DE),A ; Store in screen
INC HL ; Step to next character line ... ,A
LD A,(ATTRP) ; Get current attributes
LD (HL),A ; Set screen ...

... been ranting about exactly that on some recruitment forums.

Anyway, to get on topic, and for Mr Turkwel ... (DE),A ; Store in screen
INC HL ; Step to next character line ... going to cause you a hell of a lot of problems if ...

... screen. Here's a fixed version:
[code]
; FASTPRNT.S - Fast character ... bottom of screen
;
; On entry, A=character to print
; On exit, A/BC ... (DE),A ; Store in screen
INC HL ; Step to next character line ...

... won't be shown on screen to avoid corruption on screen file.)[/QUOTE]
finding somewhere safe to place ... involved swaping memory about like a jigsaw puzzle! The stack ... .

Forgetting the screen, a clever piece of PC code ...

... scrolling done using the character-based screen display, and it certainly ... the graphics are an improvement on the Speccy. In that ... a mix of nicely coloured (1x8 attribute) but jerky character- ... hardware sprites.

Character movement isn't so bad ...

... . You can also print on lines 22 and 23 ... it does not use a character matrix data to draw ... this works well although a few characters look strange ... [*]It seems to draw on the screen i.e. you can ... results simply copied to the screen
[*]Finally, although ...

... 8 x 8 pixel sprite on screen.


; ... />
and a,11111000b ; Calculate X character offset
rrca ;
a,l
add a,c ; Add X character offset
ld l,a ...

ld a ...

... 8 x 8 pixel sprite on screen.


; & ... br /> and 11111000b ; Calculate X character offset
rrca ;
... a,l
add a,c ; Add X character offset
ld l,a ...

ld a ...

... add a "redefine keys" screen. If this was a serious attempt at a ... is no universal agreement on a definitive set of keys ... highly refined and optimised for a small memory footprint.
... needed to have a bottom pair of blank character squares underneath ...

... bytes per character square on screen. That's 7680 bytes for a full size ... each individual character to any spot on screen. Eg, you may want a 24x16 ... area for the game and a ...

... spritepack each character cell on screen is represented by a 4-byte update ... struct if the location on screen of each struct is ... Your function could store a new character code there by modifying ... or draw the character cell with a call to sp1_InvUpdateStruct() ...

... In spritepack each character cell on screen is represented by a 4-byte update ... update struct if the location on screen of each struct is ... added a 5K song, a 5K sword, an extra sprite on screen, another ... it gets many masked sprites on screen, and fast. Even if ...

... the righthand-side of the screen. That way you don't ... extreme bottom-right of the screen into the dumbell and then ... losing a life, that is very tight indeed. Well done on finding that ... that huge jump across the screen from left to right. I ...

... that appear on each screen, game. Content wise it's on a par ... can keep up with a simple flip-screen game written 27 ... (in a few minutes you can have flicker free sprites moving on screen ... forum how some programmers are finding their ambitions frustrated by lack ...

... a cut back in the number of sprites you can have on screen ... For example, sp1 never draws a character square more than once and ... If several sprites overlap, the character squares they occupy only get ... does one draw operation per character square.

...

... the rest is a page and a half of one screen shot of ... pieces anyway, whether on a real life board or on a computer game (I ... Psion Chess), and perhaps a Speccy character enabled version of PSI Chess ... onscreen menus, or at least on-screen prompts, as to do many ...

... , but needs more resources on the ULA side to address ... you can use even coordinates on the X axis, but that ... the next / previous, inside a character cell: a 8-bit INC / DEC.
screen divided into three horizontal blocks ...

... had no problems with columnized screen.

[QUOTE=mcleod_ideafix; ... can swap the actual tracks on the mainboard with the ... the next / previous, inside a character cell: a 8-bit INC / DEC.
on them.

Not ...

... , but needs more resources on the ULA side to address ... you can use even coordinates on the X axis, but that ... the next / previous, inside a character cell: a 8-bit INC / DEC.
screen divided into three horizontal blocks ...

... -writing the attributes on each line of the screen.

... the entire height of the screen twice over, every second.
character squares (or attributes), but if ... if you write a character-space scroll routine for a fast game it ...

... unable to work on something and display the screen at the same ... time it takes to read a character from the display file, look ... result to a port you'd be halfway across the screen.
character in the screen should be output. You ...

... : booting, keyboard, output to screen, cursor handling, scrolling, timer, ... same place. the only character that really moved was ... because there is also a quote character on the letter P. ... shift down
;; special character codes are
;; 0x01 ...

... :
ld b, a ; save character
ld a, (atflg) ; value ... /> getcol:
ld a, b ; restore character
cp 64 ; greater ... char on right col

; WRITE A CHARACTER TO THE SCREEN
a character in FONT
; ...

... character at a time, CR scrolling the current row up the screen. Like a ... scroll the paper (window) up on carriage returns.[/quote]
< ... every time you print a character it has to repeatedly ... routine.

[/quote]A half width blinking cursor might ...

... see if last character was a control
ld a, (atflg) ; ... nz, fchr ;+ just print a character if it is
sub ... blgr:
ld b, a ;+save character
call 0x0b38 ;+ ... character, check the character will fit on the
ld (chrad), hl ; screen ...

... />
It was a damned fine machine, which had ... hours of teenage fun on that machine, but then ... counter numbers on white wheels, covered with a glass screen. The ... glad there is still a fairly large following, the ... when I did, as finding a good one is getting ...

... decided to upgrade to a Spectrum or a C64.
< ... of production; although a much cheaper machine to ... be able to compete on price with things ... redefine the character set to get a pixel addressable ... area of about 160 pixels square on screen; ...

... section hold a little more on short-circuit, or if a peak high ... difficulty of finding a 7 "screen with the video IN chip on the motherboard ... of the screen, if a portable dvd ... if you have ctc chip on the screen, of course. Most of ...