-
Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... . clear the flag
xor a
ld (isr_static+ ... ENDIF
; set the attributes
ld hl, attribupdate
.doneattribs
xor a
ld (copyptr), a ...
ldir
xor a
ld (copyptr), a ... -
Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…
... copy
; set the attributes
ld hl, scrattribs
ldir
; xor a ; *Jof not needed ; a ... -
Help fix this keyboard read program?This code runs in an interrupt routine with DI. What would be the simplest way of making it so it doesn't auto repeat a keypress? [code]keys: ld a…
... if 'y', 'u', 'i'
xor $03 ; 7 (37) ;
ret ... I included the drawing of attributes before the .setstate ret. Which ... -
Howto 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. …
... need to only set attributes in the area or ... the graphics and filling the attributes. It will be rather ... we need to fill the attributes
;to do this ... MSB of beginning of the attributes area
ld e, ... ),#80 ;left edge
xor a
inc l
Howto 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. …
... we need to fill the attributes
;to do this, we ... ;MSB of beginning of the attributes area
ld e,l ... (hl),#80 ;left edge
xor a
inc l
Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... ,al
; ------------
xor ecx,ecx
mov bl ... BYTE to UART
xor bl,255
inc ... ecx,6144 ; Spectrum screen size - attributes
jne @@send
Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…
... ,al
; ------------
xor ecx,ecx
mov bl ... BYTE to UART
xor bl,255
inc ... ecx,6144 ; Spectrum screen size - attributes
jne @@send
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... (hl),d ; Write 7 to attributes
inc hl ; Next ... />
; Draw all sprites using XOR method.
... /> call xor_sprite ; Now print (XOR will print/unprint)
ret ... high and low
xor a,(hl) ; XOR with screen
...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... (hl),d ; Write 7 to attributes
inc hl ; Next ... />
; Draw all sprites using XOR method.
... /> call xor_sprite ; Now print (XOR will print/unprint)
ret ... high and low
xor a,(hl) ; XOR with screen
...Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... (hl),d ; Write 7 to attributes
inc hl ; Next ... />
; Draw all sprites using XOR method.
... /> call xor_sprite ; Now print (XOR will print/unprint)
ret ... high and low
xor (hl) ; XOR with screen
ld ...Supertest 128 - Loader QuestionI wonder if someone could explain (in simple terms please) :) , the purpose of the switch code. I see what is doing (going to 48k mode via spectrum)…
... /> ld sp,068FEh
xor a
out (0FEh),a ... ,5800h ;Clear primary screen & attributes
ld de,5801h
;
; C. Clear attributes.
;
ld hl,5800h ...SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
... , 0xff ;+invert mask
xor h ;
ld h, ... /> ld a, 0xff ;
xor l ;
ld l, a ... and c ;+ mask off
xor l ;
ld (de), ... and b ;+ mask off
xor h ;
ld (de), ... ; relevant address in the attributes file from a
...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... LD (YPOS),A
XOR A ; was LD A,0 ... /> LD A,(DE)
XOR L
LD (DE), ... /> LD A,(DE)
XOR H
LD (DE), ... in the
;attributes file from a given display ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... code had some problems with attributes whenever it needs to print ... )
LD A,(DE)
XOR L
LD (DE),A ... ]
LD A,(DE)
XOR H
LD (DE),A ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... )
LD A,(DE)
XOR L
LD (DE),A ... />
LD A,(DE)
XOR H
LD (DE),A ... ][/URL]
Observe the attributes at the end of the ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... ld (coords_y), a ;
xor a ;
ld (atflg), a ... and c ; mask off
xor l ;
ld (de), ... and b ; mask off
xor h ;
ld (de), ... />
dwncr:
xor a ; If it doesn't ... /> ld a, d ; attributes file from a given display ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... you are drawing the pixels (Attributes) right to left then?
xor a if you want.machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
... bit-patterns until the final attributes are loaded.
It then ... LD BC,02FF
5B11 XOR A
5B12 LD (HL ...Worst Collision Detection & Colour Clash in gamesSorry if this as been mentioned before but i did do a search ;) In a recent discussion with a friend we talked about probs with the older games such…
... being drawn with an 'XOR', so that another 'XOR' operation will delete ... an XOR sprite routine deliberately [I]won't[/I] be setting attributes ...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... .
for fadeout attributes you can use constant #1ffe ... ink&paper of 768 attributes). this code could do ... /> ld a,d
xor 31
ld d,a ... /> ld a,l
xor 254
ld l,a ... br /> jr z,lfsr
xor 3+88
...Routine for clearing screenI was looking for a 'nice' way of clearing a screen of graphics in Z80. After a ridiculous amount of time mucking around, this is the best and most …
... you will just need to xor H (before rotation) by C ... bits required to perform an XOR on the shifted constant so ... =ub880d;613422]...
for fadeout attributes you can use constant #1ffe ... ink&paper of 768 attributes). this code could do the ...Need to scroll one column using m.c.I've used many of the available routines to scroll the entire screen in any direction, but I'm not being able to find one that would allow me to scro…
... /> bit 5,c ;check attributes option
ret z< ... 1
call SHIFT ;shift attributes column
ret
... value
xor l
and e
xor l ; set bits 5, ...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 …
... /> ld hl,22528 ;start of attributes
ld bc,6192 ;24 ... de,word which...
loop1 xor c ;..puts 32 in e ... time round to loop1 is xor c, thus staggering the colour ...40 Column Printing RoutineI've written a 40 column printing routine, which I'd like to share... It's my first piece of 'public' code so go easy on me! I don't think it is a…
... ld (coords_y), a ;
xor a ;
ld (atflg), a ... and c ; mask off
xor l ;
ld (de), ... and b ; mask off
xor h ;
ld (de), ... />
dwncr:
xor a ; If it doesn't ... /> ld a, d ; attributes file from a given display ...ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …
The difference is that ZX7 is a general pourpose packer and Laser Compact is a specific pourpose packer. So if you want to compress only screens (like Laser Compact) you may apply some filters before compression (and after decompression).
The ...RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... before, except each attribute is XOR'ed with the attribute from ... zeroes, since if 2 consecutive attributes have the same color, these ... to have 2 consecutive identical attributes, instead of replacing the second ...RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... H = x0x1x0R1R2p1p2p3
xor e ;
xor d ; A = c4c5r1r2r3c1c2c3< ... ; A = c5c4c3c2c1p3p2p1
xor d
and $07< ... recommend compressing bitmaps and attributes separately. Afterwards, you ...RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... XORed with previous line, but attributes are left unchanged
[*] " ... XORed with previous line, attributes are XORed with previous attribute ... results (using linear buffer and XOR with previous line) were a ... RCS, and a simple XOR with previous line is also ...RCS (Reverse Computer Screen)[B]RCS[/B] ("Reverse Computer Screen", or simply SCR written backwards) is a small utility I'm about to release, that reorders bytes from the ZX-Spec…
... to notice that a simple XOR with previous line produced almost ... +RLE0bit". In both cases, the attributes were changed in exactly the ...Screens and BasicA question about the ZX screens. I am using software to convert my own art and drawings to the ZX Spectrum. I have some tools to change .jpg files in…
... )
resbox_outer_loop:
XOR a
push bc
attributes though.
