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Help! Reverse engineering a Spectrum game[deleted]
... routines, thus adding a new routine when/if it is needed ... and all that mysterious Z80 assembly language...
Now you ... -
New oneliners for 2008[INDENT][INDENT][INDENT]Here's my attempt at a first-person-perspective 3d game in one line of BASIC. It's called 'wormhole', and you've got to get t…
... 't work either because the routine would never recognize alignments from ... this:
[CODE]
PRINT 3*3*3*3*3 ... (full board) for the evaluation routine to check the end-game ... 9 positions and the evaluation routine would always execute in 15s ... -
zx spectrum +2 troubleshootingHi There I am new here and I need some advise as to where to look for issues on my zx spectrum +2 it was working fine this morning .. then while pl…
... has the same RAM diagnostic routine as +2A, hasn't it ... check the result with a PRINT PEEK 32768. Is it 0 ... check the result again with PRINT PEEK 32768. Is it 255 ... -
Sorting an array...Hi Folks, Over the weekend I had a play with sorting algorithms - takes me back to my student days! :-o My first try was with the good old Bubble S…
... ...THEN[/B] statements in the routine is enough to figure out ... =1 TO n: PRINT p$(i);" ";: NEXT i: PRINT : RETURN
9000 ... GO SUB 5000
9045 PRINT "Elapsed time: ";t2-t1;" sec ... -
variable variable names with VAL$It's possible to make the RH-side variable names in a LET statement be themselves variable by using VAL$. Thus, if v$ holds the [b]name[/b] of anothe…
... done with a machine code routine, but not in BASIC. Is ...
And:
[code]PRINT this is a variable[/code ... , this also works:
[code]PRINT thisisavariable[/code] -
INSTR function...Hi Folks, Another little program that people might find useful: [CODE]100 DIM i(4) 110 LET a$="This is some sample text" 120 LET b$="text" 130 GO S…
... modified version of the INSTR routine that uses two array variables ... GO SUB 9000
160 PRINT "i$(1)=";i$(1,2 ... i$(1,1)+1):
PRINT "i$(2)=";i$(2,2 ... i$(2,1)+1):
PRINT "i(4)=";i(4)
9000 REM INSTR ROUTINE
9010 REM i$(1 ... -
Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... , RST 16 (?), but can that print more than one character? That ... . "Hello world of spectrum" and print at a position of choise ... equalient of PRINT AT 5,10;"Hello", but in assembly.
PRINT "" AND USR adres = upper screen ... -
Print text in assemblyHello, a perhaps simple question: I would like to print a text string on the screen and I wonder how to do that in the most easy way? I seem to re…
... . Alternatively, there's a 'print string' routine at 0x203C which takes a ... / LD (0x5C3C),A.
PRINT AT (and other modifiers like ... -
General purpose full screen input routineHi Folks, One of the things that annoyed me back in the 1980s with most BASICs was the lack of a full screen "formatted" input function. You could …
...
250 REM *---------------------*
260 PRINT #0; PAPER blu; INK whi ... *---------------------*
9005 REM PSS-XINPUT Routine
9010 REM Parameters:
9135 REM *---------------------*
9140 PRINT AT I(2),I(1 ... -
Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
... game was a fillscreen graphics routine using LDIR.[/QUOTE]
assembly was "Spectrum Machine Code" by ... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
...
; --------------------------------------------------------------------------
; Routine to wait for next video ... call xor_sprite ; Now print (XOR will print/unprint)
print (XOR will print/unprint)
... -
Learning Assembly LanguageHow easy would it be to learn assembly language for someone who has a decent grasp of Basic? I mean how long do you think it would take before I coul…
... is some test code to print numbers and text to ... bc,1234 ; BC = value to print
call OUT_NUM ; Call number ... !)
call PR_STRING ; Call text print
ret
< ... about 'Local labels' and conditional assembly 'IF', 'ELSE' and 'ENDIF'.< ... -
How to Extract a Font from a Game?I remember it was possible to load/save your own fonts in ArtStudio on my Speccy. I also remember it was possible to loop the loaded block of a game …
... with a custom font and print routine rather than rely on ROM ... -
Printer Printing Problem (assembler)I've a program that outputs to the lower screen at various places, using a combination of calls to RST $10 plus OUT-NUM-1 and PR-STRING. It also call…
Show us your code.
The call channel routine is OK, but do you use the RST 16 to (L)PRINT? -
Hacking the O.C.P Full Screen Editor/AssemblerIf you have been reading my posts recently then you will know that I am eager to have the sourcecode I wrote for the Spectrum during the period 1988 …
... some TAB processing into the routine as the O.C.P ... support for macros or conditional assembly. The routines use the stack ... when I wrote that scroll routine back in 1990 so please ... -
How to Extract a Font from a Game?I remember it was possible to load/save your own fonts in ArtStudio on my Speccy. I also remember it was possible to loop the loaded block of a game …
... with a custom font and print routine rather than rely on ROM ... games use their own custom print routine? Since text was used quite ... not using the default ROM print actually save memory instead of ... -
How to Extract a Font from a Game?I remember it was possible to load/save your own fonts in ArtStudio on my Speccy. I also remember it was possible to loop the loaded block of a game …
... games use their own custom print routine? Since text was used quite ... not using the default ROM print actually save memory instead of ... -
How to Extract a Font from a Game?I remember it was possible to load/save your own fonts in ArtStudio on my Speccy. I also remember it was possible to loop the loaded block of a game …
... games use their own custom print routine? Since text was used ... font and your own routine(s) you are free ... written your own 32CPL routine you'll see how ... benefits of writing your own routine. It's not that ... bothered to write the routine yourself so you'll ... -
How to Extract a Font from a Game?I remember it was possible to load/save your own fonts in ArtStudio on my Speccy. I also remember it was possible to loop the loaded block of a game …
... games use their own custom print routine? Since text was used quite ... not using the default ROM print actually save memory instead of ... -
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 …
Yes, that's working perfectly now.
I hope other people reading this code can see just how easy it is to implement a non ROM-based PRINT routine. -
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 …
... a "wait for key press" routine! ;-)[/QUOTE]
Too true ... to:
[CODE]100 PRINT "[B]Hurry up [/B]and ... -
Override AUTOLINE start?Hi there, Is there a poke that prevents a BASIC program from auto running, when it was previously saved with the LINE command? Cheers, Steve
... 7:CLS
30 PRINT #0;" Desculador de cabeceras PRESS ... n=50015 TO 50024:PRINT FLASH 1;CHR$ PEEK ... NEXT n
110 PRINT AT 7,0;("Start ... PEEK 50026
130 PRINT AT 15,0;"Byte quantity ... then used a custom assembly loader to load the ... -
Override AUTOLINE start?Hi there, Is there a poke that prevents a BASIC program from auto running, when it was previously saved with the LINE command? Cheers, Steve
... /> 10 CLEAR 65535
20 PRINT AT 8,11;"STOPBASIC";AT ... [/CODE]
And the assembly listing - hope the comments make ... loooooong time)!
[CODE]; Assembly listing:
l_5b00: ld de ... -
Manipulating attributes...Hi Folks, I have written a routine that allows a blue bar to be scrolled up and down a list to select an item. Each item in the list occupies two l…
The selection routine can be improved as follows:< ... =ATTR (y+1,0):
PRINT AT y,0; PAPER 1 ... THEN POKE 23693,ar1:
PRINT AT y,0,,:
POKE ... 23693,ar2:
PRINT ,,:
LET y=z:
Manipulating attributes...Hi Folks, I have written a routine that allows a blue bar to be scrolled up and down a list to select an item. Each item in the list occupies two l…
... /> 260 PAUSE 1
270 PRINT AT y,0;,,,,
280 ...
POKE 23693,ar1:
PRINT AT y,0;,,:
POKE ... 23693,ar2:
PRINT ,,:
LET y=z:
I like this routine now - it works well and ...Character Printing routines - 27/32 lines?There are lots of extra character-per-line routines out there for 42,51,64 even 85 characters. Are there any that do 7/6 pixel rows - and do 27 or 3…
... -bit high font and will print up to 32 lines if ... at section "d) The Print64 routine" in BROWSER.TXT in my ...
