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Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
[QUOTE=ooze48k;540300]How do i ... can't figure it out.[/QUOTE]
1) Set A ... ) Recursively call PRINT-A with RST-10 and send the codes ... -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
[QUOTE=aowen;540303]1) Set A ... ) Recursively call PRINT-A with RST-10 and send the codes ... 're doing before you start.[/QUOTE]
Um yea it ... -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
[QUOTE=ooze48k;540300]How do i ... ) of the screen in assembly?[/QUOTE]
If you're ... /> In deference to fans of RST 10 I will admit this ... -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... matter would be greatly appreciated.[/QUOTE]
By ... with the Calls and RST 16's you are using ...
This means using more RST 16 Control Codes. I avoid ... [CODE] ld a,16
rst 16
ld a,7 ... /> ld a,4
rst 16[/CODE]
...seems right ... -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... /> Sincerely,
Ooze48k[/QUOTE]
EDIT: just seen ... ;AT INSTRUCTION
RST 16 ;FAST CALL, don ... SECTION OF SCREEN)
RST 16 ;
LD ... A,6 ;COLUMN
RST 16 ;
ld bc ... br /> These codes before RST 16 or in the defbs ... -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
[QUOTE=R-Tape;542239]Be careful ... to open it first.
[/QUOTE]
With this routine ... ) you can use the normal RST 16 for all characters on ... -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
[QUOTE=karingal;542255]Thought I'd ... display text to the screen.[/QUOTE]
Thanks for this ... print
pr rst 16
inc hl
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
[QUOTE=sekrets;543602] I actually find ... lot more friendly than basic.[/QUOTE]
True,
first ... program
ret z
rst 16 ; display key (also ENTER ...(part of) screen to UDGHere is a routine to copy a Y,X-position on screen to a UDG. 0<=y<=23 0<=x<=31 144<=udg<=165 (UDG "A" to UDG "U") [code] ; start code with ; PRINT …
[QUOTE=kgmcneil;545548]I don't ... place into the UDG area...!...[/QUOTE]
I use the ... set back by a simple RST 16 of the valid UDG ...Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... might look something like this:[/quote]
[code]
LD A ... color control code
RST 16 ; fast call
RST 16 ; fast call
RST 16 ; fast call
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... DE ++, HL ++, BC --[/code][/QUOTE]
[QUOTE=karingal;547140]1st thing ... color control code
RST 16 ; fast call
< ... color control code
RST 16 ; fast call
< ... to white\\
RST 16 ; fast call
< ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
[QUOTE=aowen;521986]Once I've ... what people do with it.[/QUOTE]
Thus I suppose ... (hl), b ; reset AT_FLAG
rst 8 ; error "B Integer out ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
... Einar,
Thats a beauty.[/QUOTE]
Thanks!
rst 8 ; error "B Integer out ...RFC: 64 column font codeIn BASIC, type CLEAR 49999 then import the code at 50000. Then type RANDOMIZE USR 50000. This will create a new channel and attach stream #4 to it. A…
[QUOTE=Crisis;554834]it gets a ... it get 13 and 17[/QUOTE]
This won't ... (hl), b ; reset AT_FLAG
rst 8 ; error "B Integer out ...writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
[QUOTE=karingal;557460]
A massive change in the value of PC could be a conditional JP or CALL being misinterpreted.[/QUOTE]
Or our old friends IM 0/IM 1 triggering an interrupt and subsequently RST #38....Casstte 50 compilation emulator game questionHi - Hope this is the right place to put this question? Wasn't sure? But I have just downloaded the 'Cassette 50' compilation from wos but can't w…
[QUOTE=fog;557687]just the autorun ... " etc . cheers for the corrections.[/QUOTE]
Here's a ... /> AUTRUN: LD BC,34
RST $30 ;make BC-SPACES of ...machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
[QUOTE=Dr BEEP;558178]Most simple,< ... />
to a
RST 8
DEFB 255
[/QUOTE]
That won't ...checking bits in BASICThe question of manipulating bit patterns in BASIC was raised recently in this [thread=35728]Keys redefine routine and key check[/thread] thread. I s…
... , Matteo.[/QUOTE] Thanks. :-)
[QUOTE=roko;563447]
[CODE]
RST 48 ;MAKE_ROOM ... 00048
[/CODE][/QUOTE]
Writing the ... solution is better.
[QUOTE=roko;563447]I focused on ...Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
[QUOTE=csmith;564254]You don't ... :
[CODE]LD A,'*'
RST 10h
RET[/CODE]
QUOTE]
Thank you for ...Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
[QUOTE=meow;564262]
I have ... I've just written.
[/QUOTE]
ZXSP is saving ... /> 20 ld a,'*'
30 rst #10
40 ret
Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
[QUOTE=csmith;564254]...
For instance, ... :
[CODE]LD A,'*'
RST 10h
RET[/CODE]
215,
201[/CODE]
...[/QUOTE]
Pssst! Say, you ...Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
... />
[QUOTE=csmith;564254]
[CODE]LD A,'*'
RST 10h
215,
201[/CODE][/QUOTE]
And I wondered ... | * | 42 - page 229
D7 | RST 10h | 215 - page 242
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…
[QUOTE=Battle Bunny;570363]Oh, unless ... RST $28 and then call FP_TO_BC to get the result?[/QUOTE]
Fastest way to mirror a byte?I.E. turning 01100000 into 00000110, in assembly. I'm trying but I suck at stuff with rotation and the carry bit. Any pointers?
[QUOTE=Alcoholics Anonymous;570349]
Sean ... [/URL] is a worthwhile read.[/QUOTE]
Although rereading it ... . Almost exclusively this is a RST instruction which does increment R ...probably a stupid question about RST16I'm using the 'hello world' code borrowed from [url=http://equant-retrochallenge.blogspot.com/2008/07/zx-spectrum-assembly-programming-under.html]her…
[QUOTE=karingal;572340][code]
LD ... A
RET Z
RST 16
INC HL
Couldn't resist optimising it.[/QUOTE]
cheers - I shall ...Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
[QUOTE=Atari_Jetman;579085]I didn't ... afraid! I managed to use RST 16 quite well, but as ... bit naff.
[/QUOTE]
Well RST 16 hides all the ... got the same impression using RST 16. The spectrum is purely ...Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
[QUOTE=Zorn;582386]...Then I removed ... happen, I'm not sure).[/QUOTE]
If you remove ... . $FF is the opcode for RST $38, which pushes the current ...Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
[QUOTE=mcleod_ideafix;582411]If you remove ... . $FF is the opcode for RST $38, which pushes the current ... CAS pulses on upper memory.[/QUOTE]
And specific block ...Arkanoid - Hit Squad ReleaseInfoseek (and the [URL="ftp://ftp.worldofspectrum.org/pub/sinclair/games/a/Arkanoid(TheHitSquad).tzx.zip"]TZX[/URL] itself) identifies the Hit Squad …
... my time...
[QUOTE=mheide;588052]Is there any ... information to the Preservation Team)[/QUOTE]
Sure, bear ... l_e54f ; e54c 28 01
rst $00 ; e54e c7
l_e54f ... a ; e562 d3 7f
rst $00 ; e564 c7
l_e565 ...
