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Screen routinesHello. For my games I?m using the sprites routine method of a screen buffer and when I finish to print all the sprites I dump all the buffer in the …
... scrolling engine. It uses the stack pointer to scroll a buffer ... /> Ideally I would like to draw the sprites on the screen ... -
question re. STR$ bugCould someone point me to whereabouts in the ROM this goes wrong? [code]PRINT PAPER 5;1;STR$ 234[/code] (Only the "1" prints in cyan.) It's not the m…
... completely useless. Note also that calculator code 1A evaluates INKEY$#X ... at the top of the calculator stack) and this too will be ... -
The Euro 2012 England supporter's threadCome on in, grab a beer and try not to get too depressed. Let's take the time to enjoy the Euros now, cos we won't be enjoying it once they start! :…
... /> I have put a sweepstake draw with the teams allocated numbers ... /> 10, Karingal
11, Jumping Stack
12, Macc
13 ... -
The Euro 2012 England supporter's threadCome on in, grab a beer and try not to get too depressed. Let's take the time to enjoy the Euros now, cos we won't be enjoying it once they start! :…
... /> So anybody can check the draw the password for the zip ... "zxsoftware"
And the Draw is.....
1, mile ... , Karingal - Ukraine
11, Jumping Stack - Germany
12, Macc - Czech ... left over that concludes the draw. -
Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …
... what you do with the stack, and using ix as a ... of course) and unrolling the draw I can only get ~350 ... on the screen using my stack routine*, but using Hikarus it ... -
SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... the string parameters on the calculator stack, point CH_ADD to the name ... -
SUPER INPUTA couple days ago I searched for an "INPUT string" routine that I could use in Assembly programs and supported multiple lines, but I found none. Thus…
... the string parameters on the calculator stack, point CH_ADD to the name ... -
Help needed... RND in machine codeI have been battling away trying to convert a simple BASIC routine (below) to machine code, but to no avail. The routine is used to fire 2 bullets a…
... /> RNDFUN: ld b,$1D ;B= calculator code for VAL
rst ... next RND value on the calculator stack; the remainder does the rest ... -
Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... at the top of the calculator stack. I haven't worked out ... a negative number on the stack. As it's MCoder compiled ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... 7 whenever it needs to draw a character, scroll the screen ... page it temporarily relocates the stack. When dealing with the column ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... 7 whenever it needs to draw a character, scroll the screen ... page it temporarily relocates the stack. When dealing with the column ... -
80x24 mode (Timex required)Hopefully Martijn will be adding this to the archive soon, but until then grab it here: [url]https://dl.dropbox.com/u/15659782/BASIC80.zip[/url] Th…
... ' :)[/quote]
The old stack pointer is stored in the ... point to the end of calculator memory which is sufficient for ... -
Issue 2 headache!Ive got an issue 2 here that firstly had a blown regulator (fixed), now its reading as a 16k machine (its fully populated), ive replaced and socketed…
... using faulty RAM for its calculator stack or some other housekeeping function ... -
space available in bytes - questionHi, question: - if i create a *.txt file in pee cee: if empty it will show 0 bytes if i put text "abcde" it will show 5 bytes if i put texte (in 2 l…
... between the top of the calculator stack and the bottom of the ... machine stack; ie. the area marked "spare ... -
Assembly game programming on ZX how-to?Hi. I'm planning to build and release new software for the Speccy but I'm pretty lame as to handle its hardware despite a good mastery of Z80 assembl…
... Spectrum if you need to draw anything on a screen (sprite ... up your program - copying through stack, unrolled loops, lookup tables, buffers ... -
Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... chapter we will
- draw our 'car' by changing the ... square to blue.
- draw our 'road' by using a ... showing where the machine stack is in the RAM.< ... push'. To write from the stack we use 'pop'. What ... score
pop hl ;empty stack
ei
ret; ... -
need a new method for m/c parameter assignmentI've been using a variable length function of the form: "FN a$(a$,a[,b...,z])=STR$ USR md" to search a data table and return a string result. By putt…
... taking the parameters off the calculator stack with SCANNING but then I ... -
recovering the stack after an errorMy normal error handler starts with the stack as reset by LD SP,(ERR_SP) in $0053 ERROR_2, sets up some stuff and returns to BASIC via a "JP C,$1e73 …
... try to trace back the stack. Recover it to a safe ... be discarded. Just empty the calculator stack to clear any residual calculus ... routine, besides cleaning the machine stack. -
UDG in AssemblyHello there my fellow WoS'ers I am currently having a play with z88dk and PASMO and would like to have some fun with some UDG's so is there a tutor…
... then pushes that onto the stack for later.
Next ... from HL to DE, to draw the graphic on screen.
ld a,1 ;char to draw
ld b,4 ;x ... 'll mess with on the stack
ld hl, chars ... -
UDG in AssemblyHello there my fellow WoS'ers I am currently having a play with z88dk and PASMO and would like to have some fun with some UDG's so is there a tutor…
... /> ld a,1 ;char to draw
ld b,4 ;x ... 'll mess with on the stack
ld de, chars ... -
smooth movement in basicWas trying to figure this out myself but i would like to be pointed in right direction now :-). How do I make something move in Basic without gettin…
... than copying them to the calculator stack, but that would make even ... by,bx,my,mx to calculator stack
pop bc
djnz ... -
Graph Plothi! please, help with code: [PHP]For x=-100 To 100 For y=-100 To 100 If (x/2-25)*(x/2-25)+(y-50)*(y-50)<200 Or (x/2+25)*(x/2+25)+(y-50)*(y-50)<200 th…
... by not using the FP calculator but I expect that it ... -
Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... removing the use of the calculator stack, should produce a drawing routine ... -
Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... the E_LINE or WORKSP or calculator areas (STKBOT->STKEND), as ... initial location of the machine stack pointer. You can put SP ... idea as then the machine stack will extend down from there ... -
Machine code RST10 problemHello! After 27 years of playing with Spectrums I'm starting to look into doing assembly language properly. All went swimmingly well until I wrote …
... the E_LINE or WORKSP or calculator areas (STKBOT->STKEND), as ... idea as then the machine stack will extend down from there ... />
According to FUSE the stack pointer is up in the ... need UDGs or the GOSUB stack.
[QUOTE]I'm ... -
Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
Here's the Bresenham calculator version:
[url]http://www. ... around the PLOTXY subroutine to draw each fill line.
calculator and sinusok, look at the Sysel's routine: [PHP]3 5b00 *s 4 5b00 tabsin = #7000 03 mksin 19.11.1995 Busy soft …
... routine which prints FP from stack.
[url]http://edu ... , the 'last value' on the calculator stack. The print format never occupies ... , x is deleted from the calculator stack, a '0' is printed and ... 0028,FP-CALC Use the calculator[/QUOTE]Games featuring... relevant bugsThere was a recent improvement to the WoS database in order to classify [URL="http://www.worldofspectrum.org/forums/showthread.php?t=34261"]Games fea…
... at the top of the calculator stack. I haven't worked out ... a negative number on the stack. As it's MCoder compiled ...Relocating a block of code as to work on a 16k spectrumI've written a game in from 50000 to 65535 and was wondering if there were any way to relocate the entire block of code to work on a 16k Spectrum. I…
... of 'runtime' onto the calculator stack, from where a:
... something back onto the stack with a:
CALL ... ld (STACKP),sp ;save stack pointer
ld hl, ... GET_SP: ld sp,(STACKP) ;restore stack pointer
ei
...Film on the UK software industry - Kickstarter to complete it..Thought you guys might be interested in this - came up on my FaceBook Newsfeed, endorsed by Mel Croucher (of Automata fame) [url=http://www.kickstar…
[QUOTE=Jumping Stack;685607]
I haven't ... he actually (as in code / draw / compose on) work on again ...
