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Zecut0r and ZAFA while ago (about 2 yrs)i took VbSpec and tried to port it to Delphi 6. Althought it was pretty weak, it. Meanwhile DelphiSpec 0.1 appeared and i wa…
... cr ;"print a carriage return to screen "
currenty 1 add 0 ... />
Gabriel,
My emails to you are being return. Is ... , Do you have another email address?
I did not get ... the MATHS.fth file attached to your last email.
Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
... the screen address one pixel below the given address ? Is it best to use ... metric on which "best" is to be measured.
[quote ...Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
... the screen address one pixel below the given address ? Is it best to use ... :cool:, it is faster to modify the screen address rather than using a ... table or the stack to pop off screen ...Help required to calculate screen addressesDoes anyone have some code that calculates the screen address one pixel below the given address ? Is it best to use a lookup table ? Any examples of …
... "Routine to generate a Screen Address Table". I had to change the ... inc l to ... l was rolled back to zero it wrote all ... br /> inc l ; Changed to inc hl
ld ( ...
inc l ; Changed to inc hl
...FrameSyncIt was many many years ago since i programmed assembly on the spectrum but I just picked it up again for fun. Now this is one thing I can't remember…
... then there is a branch to address 56 which is the ROM ... in uncontended memory, memory access to screen either reading or writing will ... the border phase of the screen refresh (thats the first ... ). During these phases of screen refresh contended memory can be ...TLOTRD - compiling problemsOk guys! A new demo for 'The Legend Of The Red Dragon' is nearly finished (just need my bro to draw some artwork as I'm using sample images from the …
... each screen and load it there. Then do a CLEAR to the address ... where the first screen is and run ... you have the whole memory to play with.Optimisation Needed! Is this the Fastest way to copy bytes from screen and back again?I have the screen address (say 0,0 i.e 16384) I want to copy 4 bytes wide by 32 bytes high from the screen to an area of memory. I then want to cop…
... Rob,
Another way to speed this up would be ... to use the b reg for ... then it would be quicker to roll out the code for ... - then you don't need to check if you cross a ... low byte of the screen address you need to preserve for each line ...Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
... want the attr address and have the screen address the code is ... Attribute Address
;
; Computes the attribute address corresponding to a screen
; address ... ;
; enter: hl = screen address
; exit : de = address of attribute square
Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
... want the attr address and have the screen address the code is ... Attribute Address
;
; Computes the attribute address corresponding to a screen
; address ... ;
; enter: hl = screen address
; exit : de = address of attribute square
Convert x,y to Attribute Address in AssemblyWhat is the fastest way, given x,y (in hl) to return the attribute address?
... assumption that HL contains the screen address, but as the poster originally ... add on a routine to calculate the screen address from the XY coord ... add a good few T to the timing.128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…
... you able to always have 49152 as the screen address?
to 49152, the screen is black ... call PageRam ; effects the flipped screen
ld ... />
; hl = screen address
; de = gfx
Any examples of Proportional Font (Dark Star)Dark star had a cool proportionally spaced way of displaying text. Does anyone know of any code to do this? Cheers
... have finished the whole function to print a message at x ... />
ret
; HL = screen address
printchar:
Wanted: Game Ideas!Ok then here goes nothing. I'm a reasonably good programmer, but I'm really no good at coming up with game ideas and graphics. So if any of you have…
... moving things on screen) and a difficult case to see what the ... characters, of which the screen occupies up to 32x24 in the top ... the edge of the screen. An entire screen could be called with ... or so hours in a row to get it right. I've ...Getting attribute location from a screen coordinates (x,y)I am having trouble figuring out how to convert an x,y coordinate pair (pointing to a specific pixel) to the location of the attribute for the block …
... information that I was trying to figure out.
Thanks ... also to Alcoholics Anonymous (Who posted while ... the fact I was trying to calculate it from the X ... Y coords and not the screen address.Getting attribute location from a screen coordinates (x,y)I am having trouble figuring out how to convert an x,y coordinate pair (pointing to a specific pixel) to the location of the attribute for the block …
... of two is equivalent to a series of shift ... you add your result to the address of the start of ... now have an address that points to the attribute square you ... left corner of the main screen (minus the input area) ... ), then you'll have to subtract the Y co-ordinate ...ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…
... s->row > 21) // if sprite went off screen, reverse ... 10 sprites must be drawn to screen and that is the ... over by sp1_IterateSprChar() in row-major order. Row-major order, in ... ie, an entire row is done before moving to the next column ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... ;
; ;
; Moves the screen address down 1 line ;
; Written ... Incy: inc h ; try to move down 1 line in ...Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... could maybe be adapted for screen addressing, or may trigger ... br />
Lets say that screen address is composed of:
ok so... we need to increment CCC and when it ... , make it directly add to AA instead of BBB... ... the value we want to add.Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…
... edges of the screen. It is now modified to incorporate multiple ... sprite position calculation part seems to be fine because I ... It needs hl to contain sprite screen address, and de to contain databyte pointer ... is enough for the compile to fail.
The ...ZXLFN - storing tape header in a long file nameHi lads ;) Couple of months ago, the group of guys interested in divIDE software development has came up with an interesting idea - store tape heade…
... your disk, wanting to be placed to suitable address in the zx ... memory to be decompressed (and ... mean the same contents) files to ZX.
preparing ... />
so, SAVE "dunny" SCREEN$ will produce in the current ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... /> inc h ; Move h to beginning of screen address tablw
ld ... /> inc h ; Move h to beginning of screen address tablw
ld ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... h ; Move h to beginning of screen address
... h ; move to lo bytes of screen
ld ... screen
ret ; DE now has proper address ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... ; if not, check to see if we need to move "Y"
to the counter idea and using ... exactly zero to know if the particle went off screen. This only ... />
Also, although computing the screen address from scratch using tables is ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... h ; Move h to beginning of screen address
... h ; move to lo bytes of screen
ld ... screen
ret ; DE now has proper address ...Whatcha listening to now?I'm listening to Audioslave's Revelations album. Fantastic work! Belting it at 12 in the night! Neighbours must be going crazy! :lol: Also listening…
I`ll deffo have to pop in soon then...
< ... `ll need the speccy`s screen address or summit won`t I ... /> Oh, and I`m listening to Paolo Nutini finally... great unusual ...You cheating....Do any Spectrum games cheat, you know like Snes/N64 versions of Mario Kart or can anyone nominate any games on any format which cheat I forward NHL9…
... meant to be drawn by writing to the appropriate place in screen memory ... , but due to the address being ... miscalculated it ends up writing to ...The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... also be used to shift the contents of the screen in any ... with a register indicating pixel row to start from. For horizontal just ... substantial improvement from the 48 to the 128 may have accelerated ... have allowed Sinclair's computers to remain in Sinclair's ...Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…
... you just add 256 to the current screen address (or perform an INC ... simple ways to "avoid" the odd screen layout, I tend to generate a ... table of screen Y ... H to the start of your table, and get the screen address with ...Spectrum Screen Memory MapWhat's the advantage (mistery?) behind ULA's spectrum screen memory interpretation? 6144 bytes divided into 3 blocks, 2048 bytes long. if you want t…
... that maps Y coordinates to screen addresses, and refer to that all the ... time instead of calculating the address ... in incredibly useful - given an address in DE, it will always ... next address down. (You can also swap the registers around to ...Ways to use double buffering in basicI was meddling with woody's print stream code where you can print characters at any pixel location on screen. I was playing with 12 sprites, very ann…
... you to, eg, load up a screen$ and then copy it to the ... 128's extra memory (you select destination address). Later ... you can use it to copy from ... that extra memory back to screen$. As the name suggestes it ...
