-
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. …
... />
Easiest routine will be with these features:
- ... be rather large code, either with printing characters or not. Here ... /> push bc
push hl
;first we need to fill the ... actually has nothing to do with Sinclair BASIC. -
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. …
... bottom will be not colored with provided attribute, because you can ... , you'll see the problem with the colors:
[code ... /> push bc
push hl
;first we need to fill the ... I'll make a routine with custom print, it will be ... -
weird computer issuethe last two times i have been playing an online game my computer has been doing something odd. basically it sort of cuts out, eg the noise coming fr…
... you played any other games with similar system requirements?[/QUOTE]
push my system, but this one ... upgraded so i am stuck with it. (a lot of players ... /> im going to upgrade my memory and my power supply and ... -
Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…
... the stack pointer and using push and pop, as I have ... seeming to be packed in memory with the mask after it, as ... -
Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…
... the stack pointer and using push and pop, as I have ... seeming to be packed in memory with the mask after it, as ... />
If you use XOR with either AND or OR, you ... walking down a sprite table with the stack pointer, or even ... -
LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…
... opcode is running in contended memory or not;
[*] whether the ... (HL) is pointing to contended memory or not;
[*] whether ... LDI instructions in a push/pop loop with B going down from ... to note is that contended memory is not actually contended until ... -
multicolor on 48Kmany people tried multicolor 8x1 on 48K model and ended with maximum width about 18 chars. yesterday i tried [b]8x2[/b] on 48K and achieve 24 char wi…
... think of any demos with 8x2 attributes for the ... more general case (pictures with arbitrary attribute combinations, not ... really get hit by contended memory.
(The ... that LD HL,nnnn/PUSH HL could be faster ... than POP/PUSH. Must try again some ... -
Using Interface II joystick in kempston-only gamesHi everyone! It's me again, bothering you with new crazy ideas :) I have recently acquired an Amstrad +2A Speccy with a joystick and built-in Interf…
... with CALL JOYEMUL
-place to free memory this code:
JOYEMUL PUSH ... DE
PUSH AF
Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... : a better way to fill memory blocks it to 'ab' ... CODE]
You initialize 1st memory location (HL), then you use ... until BC reaches 0. With DE set to HL+ ... BC sized block with that byte. Together with that 1st ... ULA doesn't interfere with the Z80 (outside 4000 ...Challenge: Make a Speccy version of "Leisure Suit Larry 1"and put it on this site as a rom c'mon be nice!
... AdvGra&players=0&memory=0&language=0& ... every location would quickly fill all available memory. with packed screens 256x128 i ... small adventure)
+3 disks with capacity of 170K doesnt look ... nice to see real adventure with NPC and many objects ...Text Adventure Vector graphicsI've often wondered what the memory cost of graphics in a text adventure was. If you were to hazard a guess, how many bytes would it be possible to …
Here's my pattern filler with assembly source included so you ... use up to 30k of memory to fill a large area. This ... to pattern fill large areas with about 300 bytes of memory that it ... you to control how much memory it reserves on the stack ...PFN PRINT by Garry Rowland...Hi Folks, Whilst watching Casualty last night I thought I would surf the archive and look at some "classic" software. One I tried was a program cal…
... a little memory hungry and slow-ish to fill a screen with text ...SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
At Chris said, memory paging is key to getting ... it as it describes the memory map, hardware ports, etc.
with paging in the upper 32K ... lmpr) ; preserve system paging
push af
in a ...SAM programmingHi Can anyone provide any example hello world or graphics/sprite printing style machine code routines for the SAM? I can't seem to find anything rem…
... with original ZX48 rom in low 16kB and manually test memory ... COUPE basic disable direct memory switching and testing from ... another sample without any memory paging, setting only ... fetch current video paging
push af
in ...Help! Reverse engineering a Spectrum game[deleted]
... twice unless you are dealing with optimisation. Try to develop ... - A set of fast memory copy and memory store routines
07 ... information
10 - A solid fill routine that is optimised when ... the loader and work with a raw memory snapshot of the game ...Help! Reverse engineering a Spectrum game[deleted]
... these "libraries" may be realised with 2 or 3 instructions or ... - A set of fast memory copy and memory store routines
[B ... ]
10 - A solid fill routine that is optimised when ... screen
[B]Text games with vector graphics only[/B]
Opinion on new 128K only gamesHello, Being new to the WOS community, I am unclear on the attitude towards 128K only software, that is; Is there a strong need to support the 48K m…
... done using a PC with DeluxePaint II Enhanced/ ... three channels to solve memory alignment issues, LONG, WORD ... CMP... I find that with complex systems, modifications ... ------------
.slow_down:
push edx ; ***SLOW VERSION***
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... and uploading/downloading chunks of memory at high BAUD rates. ... ), you can easily fill the whole screen with sprites. The only ... four horizontal/vertical combinations saving memory.
The VDP ... map in VRAM. The memory buffer automaticly wraps round on ...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... ?
2. emulator with pc function key for the ... is/is not compatible with spectrenet ethernet or matrix ... the pc in a usb memory card reader please help - ... ide adapter with master&slave sd memory card readers ... has managed to use push to get 16 pixels ...ForthTrying to search for FORTH programs and FORTH articles within the forum is proving to be a complete nightmare!! If I search for FORTH in Infoseek I …
... - do you need the 80K memory extension to run it? However ... BASIC I've been testing with, the only one that ... br /> RESETCOLOURS
PUSH [NUM] VAR DAMSELS
PUSH [CONST] [NUM] [BYTE ... /> VARPTR MINES
PUSH [NUM] VAR MINES
PUSH [CONST] [NUM] [ ...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…
... that works in conjunction with the Multiface 3, thus ... 512 BYTES of the Z80 memory map (65024 to 65535 ... code so no memory was modified, thus PUSH/POP or CALL ... 65023. 80 BYTES of memory are left to finish ... x86 software timing loops with hardware timers. I must ...Cliffhanger (not the stallone film)Anyone play this? Thoughts? I've always thought it was a great idea but the perspective makes it so difficult.
... and error for each setup with the only variables being the ... hell of a memory to know when to push the boulder or ...Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... case i would like to push whole thing to situation where ... C is just look what memory we have left and make ... due attached tree.
playing with hybrid binary arithmetic coder for ... suitable for speccy capability (especially memory footprint is pain, lot of ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... , (pc+16)" with the immediate value stored in memory that many bytes ... address contained in r4 + 4 with the value of r7, and ... into r4, the equivalent of PUSH, using r4 as a stack ... is effectively the same but with a translation layer?" The answer ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... 's limited memory and inability to deal with several sets ...
.rect: push edx
push edi
mov ... ; ------------
; ------------
; ------------
.opti_down: push edx ; ***OPTIMIZED VERSION***
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... Notice the limited use of 'PUSH' and 'POP' and the ... and therefore requiring two memory cycles to load) you ... more from memory than you need. Even with a modern ... versus having an additional memory cycle even if it ... with the 6502 because I was loath to use memory ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... can fill its large caches using a 256 BIT memory ... that is; execution can continue with 'non dependant' instructions until ... are processed in parallel with normal register based instructions ... into a Windows application with interrupts firing, thread switching ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... ] I can tell you that memory usage is completely irelevant when ... it can fill its large caches using a 256 BIT memory fetch ... of 256 bit memory fetches help when a memory access triggers a ... />
More registers help enormously with this, which is why the ...Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
... applications allocate far too much memory throttling the system... idiots ... else wanted to allocate some memory. Under normal circumstances, this ... entries) for candidate pages to push out to paging space ( ... be a bit more frugal with memory usage in the first ...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... on ehas managed to use push to get 16 pixels onscreen ... time?[/QUOTE]
As PUSH is 11 T-states - that ... ? pixel sprites? interlaced video 384x256 with tv 90degrees to right rotate ... machine code program into Spectrum memory and runs it using the ...
