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need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... routine for each line and jump to it according to the ... -
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... sprite
JR Z,RETURN ;jump to return procedure if all ... ;move down a line and jump back to beginning to
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... /AND 7/JR NZ,... conditional jump JR NZ,... takes 12t for ...need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
... />
You will need a Jump Table with the addresses for ... be used to retrieve the Jump addresses:-
LD A ...My little videogames database : )Hi, here you can find my "little" videogame database: I hope you like it! [url="http://bozan.interfree.it/index.htm"]http://bozan.interfree.it/index…
need help with speed optimization. this procedure draws a sprite with mask from memory onto the screen with x-coordinate in pixels. it doesn't shift sprites in realtime, it just uses …
...
LD A,(SPRXLEN) ;Find jump address for width of sprite ... /> LD HL,JUMPTAB1 ;2 jump tables are used. One for ... />
DRAWMID JP (IY) ;Jump according to width of sprite ... />
DRAWMID2 JP 0 ;precalculated jump, this address is
W32B ...Interrupts details questionSuppose I am writing a game and I want to use interrupts to measure time, draw the screen without flicker, maybe to poll keyboard etc. What kinds of …
... in case of a near jump (for obvious reasons).
#define ...IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... and enable
ei ;interrupts. Jump to 0056 in ROM
JR NZ,left ; so jump if xmove is negative
IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…
... and enable
ei ;interrupts. Jump to 0056 in ROM
JR NZ,left ; so jump if xmove is negative
Spectrums games vs. modern games; very interesting... I've read a number of replies (on Matt's tears thread) regarding spectrum and modern console games. I found it very interesting. I think the games …
... ... it might be evolution to jump to 3D as was done ...Latinamerican Speccy Games?Hello all speccy fans! First of all, excuse my english. I'am a spanish native speaker, so I can write (speak) only a little bit of the language. But…
... TS (in fact, the 2068 jump to stores before the Speccy ...Anyone know the address mappings...of the hardware resources on the speccy; From the screen display address range to all the hardware control registers. etc. Where can I get access t…
...
JR NC,RESULTPOS ;jump if result positive
JR NC,INCPOINTER ;if so jump as no collision
Spectrums games vs. modern games; very interesting... I've read a number of replies (on Matt's tears thread) regarding spectrum and modern console games. I found it very interesting. I think the games …
... going to music, I'll jump to space exploration. With each ...3d Code... simple Anyone know where I can get some examples of 3d routines written in basic... I`ve done some googling, and come up with some source for PowerBasic or…
... staring into an abyss - the jump from BASIC to Machine Code ... Spectrum... I never took the jump into Z80 Machine Code as ...Collision DetectionHi everyone, This is my first post on WOS. Like most people here I owned a Spectrum when a teenager. At that time I was quite heavily into programmin…
...
JR NC,RESULTPOS ;jump if result positive
JR NC,INCPOINTER ;if so jump as no collision
I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... . If the opcode was a jump or call, you need to ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
Isn't going from learning binary to Spectrum emulation a bit of big jump?
I suspect there are a few steps in between that need to be dealt with first...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... emulation a bit of big jump?
I suspect there ...Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... code (rather than an absolute jump/call of a section) as ...Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …
... code (rather than an absolute jump/call of a section) as ...WOS archive on DVD?Hello This question has appeared few times, but I have not found any place to order WOS archive. Is anybody selling the whole arcive on DVD's? Jocu
... then it's tempting to jump on the bandwagon myself. I ...OT: Silent Hill 4 - The RoomI just bought Silent Hill 4 on Friday and I'm slowly making my way through it. So far I can say that it is the most twisted installment so far. All t…
... 's the bit where you jump onto the railway track... I ...OT: Silent Hill 4 - The RoomI just bought Silent Hill 4 on Friday and I'm slowly making my way through it. So far I can say that it is the most twisted installment so far. All t…
... 's the bit where you jump onto the railway track... I ...Smooth Screen ScrollingHi Everyone, Any suggestions on what is the best way to do horizontal scrolling ie. in Zynaps fashion. I am working on a routine at the moment, whi…
... has reached zero yet, then jump back to the start of ...the happiest days of your life-pt2hello,again i have come up with 2 solutions to the problem of solving this game:- 1.the more people that try to solve this game (by combining diffe…
...
#DB75 JR NC, #DB90 ; Jump if A>#5E
#DB94 JR NZ, #DBA8 ; Will jump here
#DBA8 CP ... 't realize you had to jump up at it to get ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
... RST 38H, thus making it jump back to memory address 38 ...I would like to write emulatorHi guys, I'm new to this forum but I realise that you must get loads of posts from people asking "how do I write an emulator" so I'll try and be spe…
I think my RST command works OK - its just the address in memory that I jump to is wrong. All I need to know is what is the value of 38H in decimal (and RST 00h, 08h, 10h, 18h, 20h, 28h, 30h).
:)Lord of the ringsAs I've seen, the Speccy version of this game only deals with the first part of this saga. Am I right to assume that they never got round to doing th…
... room? Willy/Frodo can't jump over the four thorns at ...Lord of the ringsAs I've seen, the Speccy version of this game only deals with the first part of this saga. Am I right to assume that they never got round to doing th…
... of this room and then jump UP into [I]Mount Doom ...
