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Simple text scrolling routine...I'm having trouble writing a very simple text scroller, the idea is to use the ROM printer routine to print 32 characters each time the routine is ca…
... b,8
scroll_text:
push hl
xor a
sometimes scrolly text stores in buffer and outputs to screen
BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…
... somehow possible to use double buffer (128k) to overcome partial refreshing ... refresh next 6 tiles
push bc
REPT 10
SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…
... the entire map graphics to buffer screen,
draw ORing/ANDing ... sprites on buffer screen,
draw the final ... each player to a tile buffer,
copy ORing/ANDing the ... joy of EXX instead of PUSH/POP.
Good ...SpritesYes yes, I know this has been hashed over plenty of times before, but... I have knocked up a quick tiling routine which works with my back buffer co…
... the entire map graphics to buffer screen,
draw ORing/ANDing ... sprites on buffer screen,
draw the final ... each player to a tile buffer,
copy ORing/ANDing the ... joy of EXX instead of PUSH/POP.
Good ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... br />
[LIST][*] Copying from buffer to screen will be much ... to copy 32 bytes from buffer to screen, without "combining" ... number of bytes in the buffer.
[*] Even scrolling ... sideways would be [B]POP / PUSH[/B] pairs, thus taking 21 ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... to copy 32 bytes from buffer to screen, without "combining" ... number of bytes in the buffer.
[*] Even ... sideways would be [B]POP / PUSH[/B] pairs, thus taking 21 ... many situations. Your proposed nibble buffer becomes more expensive to update ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... many situations. Your proposed nibble buffer becomes more expensive to update ... /> ld sp,nn ; start of buffer "half-line"
pop bc ... -line"
push af
push hl
push de
push bc
64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... T-states to copy from buffer to screen. If you change ... , and then use [B]POP / PUSH[/B] to replicate each line ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... copy 32 attributes from linear buffer to next attribute row, ... / PUSH[/B]. Afterwards read next 32 attributes from linear buffer and ... time left to calculate linear buffer addresses dynamically as you ... as single attribute in linear buffer. It means the method ...64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
push addresses of your some mask procedures in chunky-buffer
across normal chunks64x48 monochrome big pixels display ideaHi. I was playing with this idea of having a simple 64x48 bytes buffer, 1 byte per pixel, then a renderer which would take that buffer and render it…
... ;806391]push addresses of your some mask procedures in chunky-buffer
Testers for new z88dk clibA long (long, long, long) time ago a few people offered to help test the new clib in z88dk. Much time has passed since then and I won't hold people,…
... bytes assigned to the edit buffer. If you set this to ... b_array being used for edit buffer
ioctl(fd, ... can change the buffer size for editing or push characters into the ... buffer using this ioctl
Simple text scroller, first character problemin a text scroller, whole line scrolled to the left by 1 pixels using RL(HL) ; DEC L method. But at the rightmost character must be printed immediate…
... the font data into the buffer, instead of dealing with the ... de,buffer
ld b,8
loop:
push hl
ex de,hl ; hl now points to buffer ... (hl)
inc hl ; advance buffer pointer for the next line ...A vehicle for wireframe engineHi, I'm playing with wireframe graphics right now. I'm open for ideas for (simple) game that would use wireframe engine. So if you have an idea, plea…
... and COPY2SCR along with 4KB buffer.
Simple benchmark (line ... /> _vec1_cls1
REPT 32
push hl
ENDR
djnz ... br /> ld a,i
push af
di
ld ... /> _vec1_cls1
REPT 32
push hl
ENDR
djnz ...Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…
... move data, using POP/PUSH is faster than the method ... Any chance of a POP/PUSH code snippet please? I am ... his guide to move my buffer to the screen, and ... regarding the size of my buffer was well received, I ... t think about reducing the buffer region to 2 chars, ...Subtract 4 from an addressThis is a novice Z80 question really: I'm trying to vertical scroll my back buffer, but I'm not sure of the quickest way to apply an offset and mo…
... posted above. Assuming your buffer starts at address $ ... /> push iy
push ix
push de
push bc
push af ... and implement a circular buffer as others suggested, ... useful when copying data from buffer to screen.
is it possible to display code being loaded in a loader?hi, is it possible to display code being loaded in a loader?
... /> LD L, $01
L_8091: PUSH HL ;load 8 bits through ... then it writes to a buffer which starts at $8200. ... Pressing ENTER empties the buffer to the display and then ... then it writes to the buffer ... and repeat ... SPACE quits ...is it possible to display code being loaded in a loader?hi, is it possible to display code being loaded in a loader?
... LD L, $01
L_8091: PUSH HL ;load 8 bits through ... then it writes to a buffer which starts at $8200. ... Pressing ENTER empties the buffer to the display and then ... then it writes to the buffer ... and repeat ... SPACE quits.[/ ...What is the "SPECTRUM" keyword on a 128K?The 128K replaced UDG characters T and U with new commands; PLAY and SPECTRUM (or possibly the other way around.) The manual ([url="http://www.wor…
... loop within ROM 1.
PUSH HL ;
LD HL, ... PRINT_A_1+3
PUSH HL ;
LD HL,ERROR_1 ... handler within ROM 1.
PUSH HL ;
LD ... placed in the ZX Printer buffer, so you'll better not ...PUSH scrollers 3[url=https://drive.google.com/file/d/0B-KEeni1WXmoYk9Dek1zVnd6Rk0/view?usp=sharing]CATS - Faith edition (example)[/url] Hello and welcome to the w…
... at once, nor every frame (PUSH-buffers update masks previous frame ... pixels with the currently used PUSH-updater, under the assumption that ... you can just call the PUSH-updater 16 times in a ... here is that your line buffer updates (the PUSHes themselves in ...What is the "SPECTRUM" keyword on a 128K?The 128K replaced UDG characters T and U with new commands; PLAY and SPECTRUM (or possibly the other way around.) The manual ([url="http://www.wor…
... paging code in the printer buffer so that it always clears ... 9C67:
[CODE]
PUSH AF
PUSH BC
LD BC ...What is the "SPECTRUM" keyword on a 128K?The 128K replaced UDG characters T and U with new commands; PLAY and SPECTRUM (or possibly the other way around.) The manual ([url="http://www.wor…
... paging code in the printer buffer so that it always clears ... 9C67:
[CODE]
PUSH AF
PUSH BC
LD BC ...Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... you do), and you can buffer your display updates accordingly. ZXSpin ... 100% snow accuracy alone would push the CPU requirements through the ...ZX Uno programming competition[b]Rules[/b] - The game tematic is free. The languaje can be english or spanish. - You must use Radastan video mode in the game as principal. - …
Keyboard interface - new approachI came accross this PS/2 keyboard interface. It requires a PS/2 keyboard and can output serial, I2C, 8 data pins, etc.I haven't thought it over, but …
... your own keyboard made from "push to make" switches/buttons, the ... decoder circuit and tri-state buffer circuits. Again, if you want ...Function with push and popIm trying to see if I understand push and pop when it comes to using to pass parameters to functions: [code] LD HL,16384 LD A,5 Push AF Ld A…
... in hexadecimal
push hl
ld hl,buffer ; address to write ...
push hl
call utoa_callee ; print number to buffer in hex ... de ; char *buffer
pop bc ; radix
push af ; push return address ...Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... :
ld sp, buffer
pop af
push hl
push de
push bc
exx
push de
push ... :
ld sp, buffer
pop af
