-
The Official Crap Games Competition 2013 Thread!Just to announce that the 2013 CGC is OPEN! [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/cgctitle2_zps77591934.jpg[/IMG] And for th…
... MOD (modulo arithmetic) in ZX Basic is there (and ... /> Probably easier to do in machine code anyway (bitwise AND ... Easiest thing to do in basic is probably just use a ... it overflows. Or do memory contents wrap when you ... case]. In a language as slow as ZX Basic you ... -
The Official Crap Games Competition 2013 Thread!Just to announce that the 2013 CGC is OPEN! [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/cgctitle2_zps77591934.jpg[/IMG] And for th…
aghh, using 2 arrays in basic will slow down the hole thing.
maybe use poking and peeking values in memory, its the same and ends up faster. -
The Official Crap Games Competition 2013 Thread!Just to announce that the 2013 CGC is OPEN! [IMG]http://i1142.photobucket.com/albums/n608/daveyboyhughes/cgctitle2_zps77591934.jpg[/IMG] And for th…
... aghh, using 2 arrays in basic will slow down the hole ... poking and peeking values in memory, its the same and ... then, is it 100% BASIC??? UDGs don't count!), ... position to erase it in the loop as well ... the JIT compiler for BASIC do any peephole optimisations ... -
SAM Revival issue 24 now out![url=http://www.samcoupe.com] [img]http://www.samcoupe.com/2013/24.jpg[/img] [/url] It's about time... Yes, it's back! Yes, it's been a long time! S…
... were you thinking of writing in Basic?
Actually I do ... recall?
Although from memory, you've gotten faster results ... -
Yumiko in the haunted MansionSo, here is the promised Halloween preview... Go to the zx section of my homepage to download it. [img]http://members.inode.at/838331/zx/YomikoInTheH…
... . I only have 300 bytes free memory left now, so it is ... timed table with this.
In the past months I added ... to save 500 bytes of memory, but for such a table ... can be beaten only in early levels, but in later it was ... -
Confounded DEF FNCan anyone see why this is going wrong? I've been tinkering with it since tea time and got nowhere. [code] 2 DEF FN t$(n,t,d) =STR$ INT (n/t)…
... calculating function memory usage in BASIC. Just put the DEF FN in 1001 and ... the FN call in ... -
Poorly Issue One 16k spectrum diagnosis?Hello, everyone. :smile: I was lucky enough to buy an Issue One 16k rubber key the other week; I didn't know it was an Issue One till I opened it up…
... in previous photos.
1. POKE-ing the video memory ... locations directly.
I enter something in BASIC like ... screen the stripey pattern in the first column disappears ... I do this, the memory test appears, then the copyright ... -
DivIDE black editions availableI have about 6 more DivIDE black editions ready, and will finish more this week. [B]DivIDE 57c BLACK edition including ESXDOS 0.8.5 and 1GB CF card[…
... value[/B] = disconnect PLUS D memory
(adressation of port 1110011x ... DIVIDE (this disable automatic divide memory connection). PLUS D rom must ... PLUS D rom for run in DIVIDE memory. PLUS D interface bust ... /> I see 1391 bytes of free space in PLUS D rom. Not ... -
Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …
... 1 enable writing to external memory
D6 - log ... .1=connect ram memory instead ZX rom
... br /> Examples of MB-02+ memory paging:
- OUT 23 ... 23,0 - disable external memory and connect ZX rom
in basic. (OUT 23,64+5 ... -
Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... because of tiny mistakes in the hand-assembled code ... writing my own assembler in BASIC in order to help me ... and not entirely bug-free itself, but it wasn ... really make any strides in getting somewhere. I'm ... someone here can point you in the right direction.
Experimenting with turboloadersHello, My first post, having lurked here for a while. I'm a lifelong computer nerd, Spectrum fan since childhood in the eighties, and have recently…
... loader but left to the BASIC loading/management program for better ... decompressing program, ZX7 in this case, is put in memory in different addressess.
BASIC management file with the aid ...display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... /10/02/zx-spectrum-screen-memory/"]http://flockofspectrums.wordpress.com/2010 ... 10/02/zx-spectrum-screen-memory/[/URL]. As you can see ... bit shifting and OR operations in BASIC... which was fun. I'm ... /10/02/zx-spectrum-screen-memory/
1107 REM Implements ...SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... you don't need 128 BASIC to use the [B ... modify this code for use in range address #2000-#3FFF ... (divide ram page) ?
In 48basic(usr0 mode) is PLAY ... as UDG char "U" in basic line. CPU see this char ... 0009 is connect DIVIDE rom memory. We need add here ...SoftPLAY: Use the PLAY command from 48 BASICNow you don't need 128 BASIC to use the [B]PLAY[/B] command. Just use [B]PRINT #8;[/B] instead. [url]https://dl.dropboxusercontent.com/u/15659782/So…
... modify this code for use in range address #2000-#3FFF (divide ... channel stuff.
[quote]In 48basic(usr0 mode) is PLAY ... visible as UDG char "U" in basic line. CPU see this char ... #0009 is connect DIVIDE rom memory. We need add here detection ...A few questions about ZX Spectrum assemblyHi, I have a few questions about ZX Spectrum assembly language programming: - What's the best assembly tool for ZX Spectrum? I tried a bit the ZXSpi…
... fantastic Assembler with a built in emulator. :)[/QUOTE]
It's ... any tutorial? The examples provided in that page don't explain ... can't find the code in the memory.
My program was ... at the 30000 address.
In BASIC i checked the code with ...A few questions about ZX Spectrum assemblyHi, I have a few questions about ZX Spectrum assembly language programming: - What's the best assembly tool for ZX Spectrum? I tried a bit the ZXSpi…
... tutorial? The examples provided in that page don't ... 't find the code in the memory.
My program ... the 30000 address.
In BASIC i checked the code ... is to work away in the Zeus Assembler and ... resembles how programmers back in the day prepared software. ...SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... ident:
defb "SE" ; SE BASIC identifier string
; ... ld bc, 1 ; create one free location in workspace
... jp (hl) ; jump to address in HL
org ... ; put new character address in ch_add
ret ; end ...IF EXIST?In MS-DOS scripting, there is an IF EXIST command that lets you check wether a file exists in disk or not. There are any way to check it out from BA…
... does not exisit in Sinclair BASIC, although some other BASIC's i've ... ROM
switched in at the bottom of memory in the address range ... below
(right).
In BASIC (using DOS)
(after USR ...A new full-screen bicolor engine called NIRVANA[I]OK, there's something I need to clarify first: Nowadays if you write [B]"multicolor"[/B] everyone assumes it refers to "multicolor 8x1" (an attri…
... couple months ago.
In the last couple weeks I ... felt like doing something else in the meantime... voil?! :)
< ... big is it? How much free memory has the coder for him ... and keep them all compressed in memory (plus a separate uncompressed tileset ...Why?I'm just wondering why people are here? Why are we working on or using old hardware? Why are some of you putting a lot of effort in upgrading the ha…
... , like the FILE pointer thing in C, which does it well ... memory leaks do you get in structured programing if you forget to free memory ...Getting aquainted with the IF1bisToday, fifteen days after dispatch, the IF1bis arrived at my door. In perfect order. No customs, no TVA and no handling fee involved. The arrival of …
... the existing BREAK only works in BASIC. If we only could ... for a return to BASIC are done as soon ...
counter EQU 15872 ;some 'free' mem addr
;-------
...Why?I'm just wondering why people are here? Why are we working on or using old hardware? Why are some of you putting a lot of effort in upgrading the ha…
... my time writing little games in BASIC for the fun of it ... was still writing little games in BASIC, but now they had little ... screen, drawing occasional large graphics in a speedy way that PRINT ... numbers of keyboard ports and memory locations of the display file ...A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…
I guess I'll keep with file #5.
Using file number 0 doesn't free memory (it seems that +3DOS always have memory reserved for 15 opened files), and loading 0 in b uses the same memory than loading another value.Maze-K for Sinclair ZX81Found this new game for the the Spectrum old brother. [URL="http://www.zonadepruebas.com/viewtopic.php?f=15&t=4646"]Maze-K for ZX81[/URL]
... issue with running out of memory, surely it's better to ... many obscure methods of saving memory in ZX81 BASIC program before they can ...Maze-K for Sinclair ZX81Found this new game for the the Spectrum old brother. [URL="http://www.zonadepruebas.com/viewtopic.php?f=15&t=4646"]Maze-K for ZX81[/URL]
... issue with running out of memory, surely it's better to ... many obscure methods of saving memory in ZX81 BASIC program before they can ... , he seems a quite prolific BASIC programmer at the moment.
Writing faster BASICIn terms of structuring BASIC programs, what are the best ways allocate variables, functions, arrays? Any tips. I remember INPUT mag had some suggest…
... -modified version of that BASIC assembler. The good news ... listing for that is in the link. It's ... just use it to load BASIC text files quickly.
... 's loads of space free since I moved the ... br />
In practice this program in BASIC has no practical use ...Which Emulator supports Betadisk48?Hi out there and happy new year, I'm looking for an emulator to run with my vision1.7 trdos-rom in 48 mode. Unfortunately most emus only support Bet…
... second 16K is present in the first memory 0-16383 (0000h-3FFFh ... the EPROM occupies the same memory space as the original EPROM ... EPROM can be accessed through BASIC, the memory area between 15360 and ... uses *133 bytes of RAM in BASIC variables (23734 to 23866) + ...Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…
... in basic/asm/C or how to do a cls in basic/ ... asm/C and so on.[/QUOTE]
As regards BASIC ... the ubiquitous and comprehensively unhelpful "Memory fault. Core dumped.". Although ... ... "... comparative code." For BASIC, read the Vickers book; for ...Outputting debug trace to RS232 (assembly)Hi Guys, I'm working on a game at the moment (written in assembly) but I am really needing to write out a debug trace of what is going on with the p…
... works, and IF1 pages in but it crashes (RST ... 30 at 00BCh in IF1 ROM) and returns ...
I could go "start in BASIC" route but having to write ... a string of BASIC before doing the appropriate ... a block of memory then do a memory snapshot save. It ...ZX memory questions1. what is the highest address in a 48k spectrum that can be written to? 2. can you write to an address less than 16384 (on real hardware) 3.48k...…
great thanks. :)
and
4. excluding the screen memory and attribute table how much free memory is available in a 48k machine
