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Reading from the 128 Serial PortDon't shout at me if this is a silly question. I have Googled extensively, and searched the forums, but I can't find anything discussing what seems t…
... time of checksum every n bytes before anything is done with ... chunk of bytes at wire-rate into a BASIC string variable, and ... possible. Even sending a long string out using LPRINT doesn't ... -
Reading from the 128 Serial PortDon't shout at me if this is a silly question. I have Googled extensively, and searched the forums, but I can't find anything discussing what seems t…
... chunk of bytes at wire-rate into a BASIC string variable, and ... possible. Even sending a long string out using LPRINT doesn't ... -
Russian Translations...As i have once again been reminded (by the "Homebrew games" thread), there are some funky looking Russian games that I can't play due to not understa…
... made the following string in memory eight bytes longer. The newly ... come first in the adjacent string, before the "PRINT AT" ... introduced into the following string often get printed outside ... so introduces effectively an extra string into the game, causing ... -
Russian Translations...As i have once again been reminded (by the "Homebrew games" thread), there are some funky looking Russian games that I can't play due to not understa…
... this message which has 5 bytes left over after editing,
bytes)
DEFB 255 ; end marker ... spaces are encountered in a string they aren't actually written ... -
Memory concerns with z88dkI've retaken my old spectrum project and sadly I've reached a dead end very fast. I'll try to explain my worst problem in a few lines. I'm not a vet…
... 57 ; d1d4 - d1ec --free- 25 bytes free
58 ; d1d1 - ... 59 ; d101 - d1d0 --free- 208 bytes
60 ; d000 - d100 ... im 2 vector table (257 bytes)
61 ; ce00 - ... cfff ------- z80 stack (512 bytes) set SP=d000
[/code ... -
Dim commandI try o find a BASIC COMPILER for ZX SPECTRUM 128 that use DIM command with two or more letter as 10 DIM AB(10) instead of 10 DIM A(10) Any iforma…
... to a float size (5 bytes). There is no other trick ... trick is to use a string dimension and use the CODE ... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... should probably announce a string with "DEFM" (message) instead of "DEFB" (bytes). -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... make a NULL-terminated C string.
Incidentally, ... another way of printing a string, this time a NULL ... strings). That is, a string ending with a byte 0x00 ... CP 0 requires 2 bytes and requires 7 T-states ... states, instead of 2 bytes and 7 T-states for ... -
question about generating tap files with z88dkIs there any way to modify the output of appmake without recompiling the appmake binary. The tap file it outputs does a [CODE]randomize usr var "3276…
... /> (Why the conversion from a string?) I need it to just ... a conversion from string? Because it saves some bytes as Spectrum BASIC ... adds five invisible bytes to each ... -
question about generating tap files with z88dkIs there any way to modify the output of appmake without recompiling the appmake binary. The tap file it outputs does a [CODE]randomize usr var "3276…
... a conversion from string? Because it saves some bytes as Spectrum BASIC ... adds five invisible bytes to each number.[/QUOTE]
VAL sorry, yes.
Five bytes? didn't know that, why ... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... , and whether a particular string of bytes is meant to be treated ... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... , and whether a particular string of bytes is meant to be treated ... -
Skooldaze TooDear WoSsers, Thanks to Skoolkid's disassembly I'm attempting to write a new "improved" version called [B]Skooldaze Too[/B]. As part of the improvem…
... - saves 64 bytes
[*]16-bit num to ASCII string routine for ... uses the modified score / lines string routine.
[*]Removed the odd ... -
Print at 128,87? :)The advanced search function didn't help me find the answer to this, and I don't remember seeing anything similar in magazines or books... so please …
... the HORIZONS tape (about 300 bytes of code). You can try ... -16 default 8
d$ - string to be processed.
Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…
... terminal you would printf() a string containing that escape sequence to ... printf a string containing CHR$16 and a couple of bytes to ...Dark SceptreThis game was popular then and (looking at the Top 100) is popular now but I still don't understand what the hell I should be doing or what sort of s…
... discovered the format of the string table. What's interesting is ... />
And here is the string table:
[CODE]
0 ... packed into every three bytes. Each string is preceded by a length ...ZX Demos and the wow factorI remember reading a few comments in the past 3 years regarding demos. Some comments included how boring it was to see this or that effect again, how…
... myself for having a long string of game tech (mostly on ... fit your demo into 256 bytes of code etc. You know ...How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…
... is no codes in the string of the menu header, the ... string ends with two spaces. I' ... rather short routine (20-30 bytes), shorter than any mess with ...How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…
... is no codes in the string of the menu header, the ... string ends with two spaces. I' ... rather short routine (20-30 bytes), shorter than any mess with ...'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
... just a couple of bytes you can read using ... is, the last 768 bytes of ROM, the addresses ... 's bitmap uses 8 bytes, and the Spectrum uses ... ;
; BC = address of the string
; D = Y-coordinate on ...
; Write the 8 bytes of the character bitmap to ...How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…
... the character, i.e. 8 bytes in memory
xor a ... using RST #10 only, because string print routine in the ROM ... bit 7 as end of string code, thus not allowing to ...Arrays in asm ?Just following the idea to make the menu entirely in asm, how can i handle arrays in asm to store the each game loader to be loaded ? thx in advance
... /> Given that an array of bytes may not be the data ... :
* a table of string entries (in other words, a ... in hex). \x0 in the string means the byte 00:
bytes as in the second example ...A tidy loader for minigamesThe minigame competition doesn't permit the use of separate loaders like [code]10 LOAD "": RAND USR 32768[/code] The loader must be included in the b…
... just shaved off two more bytes.
Enter the ... so it appears before the string variable in memory. The address ... 5[/b], the six bytes stored in memory will be ...
That's four more bytes that don't do any ... yet). The last two bytes are yours, to use ...Resolving USR entry point into a data + m/code block?Well, I had another look at that Merlin listing and decided that blowing up the faint page made it possible to read everything (with a struggle). How…
... noticed that if the 826 bytes discrepancy between the instructions and ... C9 followed by a long string of zeroes (blocks 4 & ...Do a load "file" with ASMFollowing the idea to build a menu with asm, now i need to know how to do a load "file". I can use the Rom routine but i am not sure if the rom rout…
... (loaing or saving) is 19 bytes long but you only provide ... /> For the header, prepare 17 bytes in the following format:
String Array; 3=Code/SCREEN$)
Byte 1-10 = Filename (10 bytes ... 15-16 = Program Length in bytes (remember, Program saves Program and ...Do a load "file" with ASMFollowing the idea to build a menu with asm, now i need to know how to do a load "file". I can use the Rom routine but i am not sure if the rom rout…
... +5 mentioned above take 68 bytes; inserting the code to prepare ... -READ would add a few bytes more. Although the BASIC call ... by pre-loading the command string space as required.Seeking alternatives to DATA statementsAnyone know of any memory saving alternatives to storing a list of numbers, other than using DATA statements or poking data into addresses?... Im ti…
... in hexadecimal in a single string data statement would, I imagine ... them all together in a string data statement like that then ... 'd need to use three bytes for every decimal representation of ...Seeking alternatives to DATA statementsAnyone know of any memory saving alternatives to storing a list of numbers, other than using DATA statements or poking data into addresses?... Im ti…
... 8 bytes for each string you concatenate (2 bytes line no; 2 bytes length ...Message to all programmersHello folks, more and more programmers in the recent time are using special loading routines for their Homebrew-Software. This makes their game runn…
... number 23749 into a VAL string as well. On some disk ... not needed to save three bytes of memory. On Spectrums we ... still count the bytes ;)
I guess all ...
