-
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... at a time in the buffer
////////////////////////////////////////////////////////////////////
.start ...
pop hl
push de
ld de,33 ... from buffer to screen
////////////////////////////////////////
.dump
push ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... at a time in the buffer
////////////////////////////////////////////////////////////////////
.start
[code]
dump:
push hl
ldi x 32 ... />
[code]
push hl ;; place function parameter "disp ... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... br /> ////////////// Blit the stuff from buffer to screen ////////////////
////////////////////////////////////////////////////////////////////
...
.dump
push de
ldi
... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... br /> ////////////// Blit the stuff from buffer to screen ////////////////
////////////////////////////////////////////////////////////////////
... )
.dump
push de
ldi
... -
Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…
... br /> ////////////// Blit the stuff from buffer to screen ////////////////
////////////////////////////////////////////////////////////////////
...
.dump
push de
ldi
... -
another c64 vs. Speccy site...[url]http://c64vsspectrum.com/[/url] 25 years and we are still brawling.. ;)
... , not actually including a frame buffer for the screen like the ... emissions regulations. They chose to push the next model out faster ... -
Running TZX off an IDE drive? Or streaming from a NAS?Hello. I know about the DivIDE project, and about the ZX Ethernet project, but not how far they've come or what they can do. So: 1. If I have a squ…
... to decode the TZX and push the data to the right ... RAM was available as a buffer. [/QUOTE]
1. The ... -
alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…
... had to change it to push 110 (0xC0) instead. It took ... to 0x4000 and the printer buffer is moved up to 0xdb00 ... normal location, uses the printer buffer to store additional system variables ... -
Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... add or sub "buffer width" to current buffer start and then move ... the buffer to vram. That ... via stack (pop, push, or LD HL, PUSH HL... depends what's ... -
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... entire graphics buffer is stored in this sequence
push hl
buffer and special drawing/printing procedures ... -
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... entire graphics buffer is stored in this sequence
push hl< ... of memory for the screen buffer and special drawing/printing ... .xx T/byte
PUSH/POP in theory 10.5 ... )
LD HL, xx / PUSH HL 10.5 T/byte ... was example of very fast push/pop copy routine. he ... -
Fast screen writesI wondered what the faster than LDIR methods of writing to the screen were.
... timing, as an interrupt will push the return address on there ... in register pair and PUSH it into screen buffer) interrupts can be ... any problems.
Typical PUSH-filler code, 16.5t per ... then write it to screen buffer) you have slightly more problems ... -
RGB on speccy ?hi, just a question : are you aware of scene demo trying emulate rgb ? i was a bit ill last few days so laying in bad i come with a (stupid ?) idea.…
... lines in the other video buffer :)[/QUOTE]
I don ... is a big issue because PUSH works from right to left ... -
A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
... current location
push bc
call GetLineAddrOne ...
ScrollUpLastLineInScreen
push bc
call GetLineAddrOne ; ... current location
push bc
call GetLineAddrOne ... line in the scroll buffer
db 0 ... -
Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... , don't store your screen buffer in the same way as ... each line of the screen buffer to the display, fetching the ... could even make your screen buffer bigger, so you can copy ... line. Just remember not to PUSH or POP anything, and to ... -
Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... , don't store your screen buffer in the same way as ... each line of the screen buffer to the display, fetching the ... could even make your screen buffer bigger, so you can copy ... line. Just remember not to PUSH or POP anything, and to ... -
Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... ,nn" and all the POP / PUSH instructions for every line of ... on your buffer)
then use loooooong push/pop/ld sp ... -
Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
...
make_room equ 0x1655 ; create buffer routine
strms equ 0x5c10 ... registers
push af
push bc
push de
push hl
push af
push bc
push de
push hl
push ix
push ... -
Need to read code start and length from a +3 diskso i can transfer them to my internal ZXMMC interface and my mind has died as to how to do it (i know how to for a tape) any help or a general kick i…
...
inc bc ;Filename
push bc
;
; Switch to ... />
pop hl ;Filename
push hl
ld bc,5 ...
sbc hl,bc ;Load buffer is 130 bytes before filename ... ROM.
;
finish:
push af
ld bc,7FFDh ... -
Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... d1ff - d1ff SP1.LIB attribute buffer
54 ; d1f7 - d1fe ... SP1.LIB pixel buffer
55 ; d1ed - ...
push af
push bc
push de
push hl
push registers for you.
Character scrollingOk, first I'd like to say that I'm not looking for a complete routine (but that might help) because I am hoping to write it myself and learn a bit mo…
... data value
.nextroll
push bc
ld b, d ... the table in the back buffer (so it can only run ...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…
... I draw to a back buffer in non-contended RAM ... /> isr: push af
push bc
push de
push hl ; ... br /> .nextbuffentry
; check for buffer end
ld a, b ... jp z, .finished
push hl
; get destination ... to real screen buffer.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…
... inner loop to remove the push / pop of hl that would ... a, (copyptr)
; check for buffer end
cp l
OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…
... looks at as candidates to push out to swap are ones ... CPU's TLB (translation lookaside buffer, essentially an on-CPU cache ... be a great candidate to push out to swap when a ... Windows VMM can't actually push any of this process out ...OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…
... looks at as candidates to push out to swap are ones ... CPU's TLB (translation lookaside buffer, essentially an on-CPU cache ... be a great candidate to push out to swap when a ... Windows VMM can't actually push any of this process out ...tricks to simplify codingWhen i started with programming in assembler i had very simple approach to do things. Just shifting bytes around, doing simple tests and so... Later …
... /> [code]
.starthere
push hl // save possible message parameter ... graphic into an 8-byte buffer where the complete graphics for ... have been drawn into the buffer. The buffer is then drawn to ...'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
... /> The arrangement of the screen buffer is another of those things ... quote]
The screen buffer starts at location 64*256 ... all.
next_scanline:
push bc ; Free up a register ... odd way that the screen buffer is organised
; makes ...Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …
I used the PUSH/POP method on Rallybug, then ... a load of PUSH instructions to clear the buffer screen every frame ...
