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IN or INKEY ?just curious which is better to use.. I have a menu done.. and use 6/7 to go up down it + space to cycle thru the options (using inkey).. obv. if I w…
... ;to calculator stack: A
FPTOA: equ $2dd5 ;from calculator stack: A< ... $20
call SCANNG ;stack 1st variable
rst $20 ... over ,
call SCANNG ;stack 2nd variable
rst $ ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... parameters are taken off the calculator stack, which is what seems to ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... parameters are taken off the calculator stack, which is what seems to ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... size would move the calculator stack, not the machine stack.
That ... either. There are some other calculator stack errors listed, so it might ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... the result is in the calculator stack, LDIR again the parameters back ... result is popped from the stack to be stored at its ... -
FN nesting error?While playing with FN functions that call assembly, I've found something weird. Check out this code: [code]10 DEF FN f(a,b)=a+b 20 PRINT FN f(FN f(…
... /> ; result as last value on calculator stack.
POP AF ; restore ... /> ; result as last value on calculator stack.
;FIX: Restore the ... -
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... ;to calculator stack: A
FPTOBC: equ $2da2 ;from calculator stack: BC< ... br /> FPTOA: equ $2dd5 ;from calculator stack: A< ... ,
call EX1NUM ;stack 1st parameter
pop af ... -
New SpecBAS available - v0.710Been a while, but I've just uploaded the latest build of SpecBAS. This one now supports tilemaps (with rotation and scaling) and added OVER mode (XO…
[QUOTE=Dunny;579193]I shall pop an archive of demo programs up for you. Here you go:
[url]https://sites.google.com/site/pauldunn/demos.zip[/url]
Unpack that into your Specbas folder.[/QUOTE]
Thanks mate. Although now ... -
Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... correct number were on the calculator stack. (That slightly longer ... />
[code]
;stack function parameters passed from BASIC ... the "PRINT USR to calculator stack" method of passing parameters ... put them on the calculator stack. So the general function ... -
Procrustean PrintingHere's a short routine to manage printing of text with command tokens, to avoid messing up the screen when they are expanded. It just prints as many …
... correct number were on the calculator stack. (That slightly longer ... />
[code]
;stack function parameters passed from BASIC ... the "PRINT USR to calculator stack" method of passing parameters ... put them on the calculator stack. So the general function ... -
Calculating percentage..or even calculating percentage. Maths and asm I find verryyy tricky. Can anyone suggest the easiest/best way to calculate a percentage from two 1…
Use the calculator, stack the numbers and calculate with RST #28 -
Calculating percentage..or even calculating percentage. Maths and asm I find verryyy tricky. Can anyone suggest the easiest/best way to calculate a percentage from two 1…
... ;from calculator stack: AEDCB
STAKBC: equ $2d2b ;to calculator stack: BC< ... br /> FPTOA: equ $2dd5 ;from calculator stack: A< ... /> ret
OPTION2:;stack the answer as a string ... -
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 …
... you can point the stack pointer into your data and ... registers. Then point the stack pointer at the end of ... to work was to draw or copy the scenery ... screen area. You then draw your sprites straight onto the ... , where you only re-draw things that have changed, ... -
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 …
... you can point the stack pointer into your data and ... registers. Then point the stack pointer at the end of ... to work was to draw or copy the scenery ... screen area. You then draw your sprites straight onto the ... , where you only re-draw things that have changed, ... -
Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…
... beginners - it involves treating the stack pointer as just another address ... -by-line, and one to draw the new one line-by ... -
Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…
... beginners - it involves treating the stack pointer as just another address ... -by-line, and one to draw the new one line-by ... -
Fairlight's use of LDIRYS, comparing Fairlight and Nightshade, said: [quote]Fairlight is much more interesting even though the techniques that Bo Jangeborg uses for screen…
... to use special routines that draw line by line upwards from ... the ones which use the stack. Using PUSH to write into ... -
Creating a new game - AssemblySo... finally I?m studying Assembly Z80... after 36 years. :) Well... it?s sooooooooooooo hard to make a game using Assembly? I bought a book (Spectr…
... value being removed from the calculator stack, but I've not dug ... -
M/C mathsHow would I do the equivalent of LET A=B*7 in machine code?
... * Put the value on the calculator stack
* Put the multiplicand ( ... this case 7) on the calculator stack
* Call $28 ... * Leave the product on the calculator stack
* Point CH_ADD to ... and while within the calculator by using the STK_DATA ... -
Is there a limit to the numberof variables you can have in BASIC..... Reason I ask is I've got an idea....but using my "lowest common denominator" approach to code I fear that I'…
... system variables or the machine stack or calculator stack by POKEing an inappropriate ... -
Disable interrupts?Well, I've read the bits from the David Webb book about interrupt modes and (vaguely) appreciate the principles behind having a vector table, after r…
... a simple RET for screen draw timings to begin with. Once ... />
I then set my stack pointer to 0 (so the ... storage, so long as the stack doesn't grow too big ... -
Copying a SCREEN$ in ZX BASIC in 1 second?!Following on from the revived "[thread=20207]Saving a complete SCREEN$ in BASIC[/thread]" thread (although Arjun really only needed a suitable POKE i…
... passed to and from the calculator stack and so has to be ... -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... /> #pragma output STACKPTR=53248 // place stack at $d000 at startup
draw it.
void loadlevel()
How much space does a number take?Hi Folks, Could someone please remind me how much memory a number takes up in a BASIC listing. For example, if you had: [CODE]100 LET a=3000[/CODE…
... and string descriptors on the calculator stack.
The second byte ...using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... use the ROM's FP calculator to evaluate any FP ... commands without breaking out to stack some other element of ...
stack A : stack B : rst $28 : divide : end_calc
stack C : stack D ... /> e.g.
stack A ; stack B ; stack C ; stack D
rst $ ...using the ROM's FP calculatorIs it possible to use the ROM's FP calculator to evaluate any FP expression in a single sequence of commands without breaking out to stack some other…
... ]
stack A
stack B
stack C
stack D
calculator to evaluate any FP ... without breaking out to stack some other element of ... /> stack A : stack B : rst $28 : divide : end_calc
stack C : stack D ...How much space does a number take?Hi Folks, Could someone please remind me how much memory a number takes up in a BASIC listing. For example, if you had: [CODE]100 LET a=3000[/CODE…
... FP representation right onto the calculator stack ready to do business with ...Is there a ROM modification (48K) for load without typing LOAD""?The target is to play with 48K machines with keyboard broken, or an alternative solution for new clones like Superfo instead of making a new keyboard…
... STMT-RET is on the stack.
;; SAVE-ETC
; parameters from the calculator stack.
; length of string in ...
