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Minigame Compo 2007Hi there, also this year, there'll be a minigame competition, open to all 8-bit computers and consoles. It consists on writing games whose size (…
... bytes (66 without OUT and 4 bytes can be placed directly in BASIC ... /> jr c, dolz
;STORE LITERAL
;no comment at ... /> ;to the four bytes which are occupied by BASIC LINE NUMBER and ... -
IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …
... br /> JR getnum3 ;skip following bytes
getnum2:
LD ...
CALL $2AB6 ;stk-store - stores FP onto calc stack ... br /> CALL prmsg
DEFM "BASIC program decoded."
DEFB $0D ... $0000 ;value gets modified by BASIC decoder
reloc3:
... -
VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... nybbles of memory - ie: half bytes. I believe this was because ... . You can't store m/c or BASIC in this area of ... -
VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... nybbles of memory - ie: half bytes. I believe this was because ... . You can't store m/c or BASIC in this area of ... -
VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... c and how to mix Basic and machine code on the ... />
; Copy 64 characters (512 bytes)
; from ROM 32768 to ...
; Increment head index and store new position in A & ... br /> BNE COMMODEGEN
; store the position of the commode ... -
VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…
... ; and restored before returning to BASIC
PTR1 EQU $FB< ... page locations on stack that BASIC would otherwise use
; Copy 64 characters (512 bytes)
; from ROM 32768 to ... BNE COMMODEGEN
; store the position of the commode ... -
ZX81 tape formatIs there a description of it somewhere? The TZX format doesn't give it but can it be worked out from what it says about block 19? There is a good d…
... or 6Mhz base clock to store the timings in a TZX ... silence
1-127 bytes filename (bit7 set in last ... contains the system area, the basic program, the video memory, ... /> 5 seconds silence
LEN bytes data, loaded to address 4000h ... -
Image to ZXSpec 1.0Hi, I've written a piece of software (still not finished) that outputs any kind of image onto a Spectrum having being converted on a PC. It takes a…
... , you can then poke 512 Bytes from Adress 23760 (if no ... /> [/code]
You can even store 8 pixel in one byte ... a bit hard in Spectrum BASIC because Spectrum has no native ... -
Image to ZXSpec 1.0Hi, I've written a piece of software (still not finished) that outputs any kind of image onto a Spectrum having being converted on a PC. It takes a…
... , you can then poke 512 Bytes from Adress 23760 (if no ... /> [/code]
You can even store 8 pixel in one byte ... a bit hard in Spectrum BASIC because Spectrum has no native ... out how this would work - BASIC can display 256 x 176 ... -
Desperately need help with .TAP file bug (probably a wrong value error)I'm trying to create a .tap file with Java and have been following the specification at [url]http://www.zxmodules.de/fileformats/tapformat.html[/url…
... it. Internally, the Spectrum stores BASIC in a tokenized form. The ... do the BASIC part, I'll store this as bytes and just append ... -
Desperately need help with .TAP file bug (probably a wrong value error)I'm trying to create a .tap file with Java and have been following the specification at [url]http://www.zxmodules.de/fileformats/tapformat.html[/url…
... do the BASIC part, I'll store this as bytes and just append ... -
faster bitwise operators?well, sinclair basic lacks bitwise operators and I searched "basic forum" with keyword "bitwise" and only 3 thread came up. So the forum also lacks b…
... program is 20 bytes long (+5 bytes to store the bit data). It ... ; Loop
RET ; Return to BASIC
Port: equ 61438 ... 10
[/code]
Bytes for this machine code program ... to a safe place to store 5 bytes of data. -
Best way to store vector images in Sinclair BASIC?Let's forget for a moment that Sinclair BASIC is slow. If I have a picture made entirely of vector images, what would be the best way to store that d…
... />
the BASIC's internal number represention takes 5 bytes. you can ... space consuming when you need store an integers.
btw. you ... can store it as absolute coords and ... -
Best way to store vector images in Sinclair BASIC?Let's forget for a moment that Sinclair BASIC is slow. If I have a picture made entirely of vector images, what would be the best way to store that d…
... store your vector data not in DIM or DATA but as bytes ... -14 bytes, quite possibly more. We can easily store each ... PLOT or DRAW command in 3 bytes ... 255
17 bytes + 1 STOP byte.
< ... stuff very easily (in BASIC you add extra DATA lines ... -
Rainbow Generator for 48K Spectrum using PUSHThis is what I came up with from [B]gasman[/B]'s suggestions. It's stable in ZXSpin and ZX32 simulating a 48K Speccy. Anyone like to try it on the …
... /> po_store equ 0x0adc ; position store routine
report_j equ 0x15c4 ... ;
ldir ; set remaining 3071 bytes
ret ; done
... af
; return to BASIC
ret
; ... -
Ultimate! Time WasterThis used to bug me big time 25 years ago.:mad: In the early 16k releases of Ultimate Play the Game , Games Jetpac Cookie Trans am there are three …
... and 2 bytes in length. If they didn't store them as ... suppose they could store the smaller blocks in the BASIC stub - I ... -
Ultimate! Time WasterThis used to bug me big time 25 years ago.:mad: In the early 16k releases of Ultimate Play the Game , Games Jetpac Cookie Trans am there are three …
... and 2 bytes in length. If they didn't store them as ... suppose they could store the smaller blocks in the BASIC stub - I ... long whining single tone (0 bytes) until it reaches the higher ... -
Ultimate! Time WasterThis used to bug me big time 25 years ago.:mad: In the early 16k releases of Ultimate Play the Game , Games Jetpac Cookie Trans am there are three …
... as a place to store small programs until the ... 8 kilobytes (8192 bytes) of data 4 bytes "downwards" in ... [/B]
Two bytes containing the following code
The two bytes are loaded into address 23672 ... quickly gets overwritten by BASIC and thus may form ... -
So what about ethernet and ZX BASIC?Well, as of about 5 minutes ago, ZX BASIC for the first time properly wrote some packets to the network! OK, so it isn't perhaps 100% what Andrew Ow…
... is no different - the BASIC extensions for filesystem operations like ... the BASIC streams support. Each module gets a fixed 8 bytes in ... 0x39FF). This allows them to store things like the page numbers ... streams module, but 256 bytes means that the buffer routines ... -
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…
... once you leave the basic system behind); it's ... be perfectly fine to store game data, for example ... one "struct sp1_ss" (20 bytes in spectrum version) for ... one "struct sp1_cs" (24 bytes in spectrum version) for ... approach might be to store level data and level ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... could be compounds of this basic unit... EG: For a ... by 24 pixels, the basic unit might be 8x24, ... files, a series of bytes ordered according to preferrence, a ...
9 ) What is the basic maptile unit size in pixels ... the map array to store any other data other ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... design, and ask some basic questions about what limits ... pixels which is 144 bytes. with mask it is ... have not space to store sprites mirrored and shifted. ... good that you can store mirrored and preshifted sprites ... and/or mirrored). while bytes in line depends on ... -
Beepola v1.00.00Beepola is a new multi-channel, multi-engined, tracker-style Beeper music editor for Windows (although it should also run perfectly well on Linux or …
... ! If you look at the BASIC loader after compiling a Music ... same player without having to store multiple copies of the same ... change two addresses - about 24 bytes into the SFX player there ... for the melody, followed 4 bytes later by another LD DE ... -
1K ZX81 "Chariddy" games competition mate..I'm trying to put together a Cronosoft 1K ZX81 gamestape in the style of the old "JK GREYE" 10 games tape that I remember owning about 28 years ago. …
... saving 2 bytes.[/QUOTE]
Three bytes even, as ... next three bytes.
You can also store a ... useful amount of code (33 bytes) in ... there are another 3 bytes of unused system variables ... possible to write a BASIC program that can also ... -
Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... ; Loop back -6 bytes 20FA
PUSH DE ; Store DE on stack ... back 20F1
PUSH DE ; Store DE on stack D5
RET ; Return to BASIC C9[/SIZE][/FONT]
Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... ; Loop back -6 bytes 20FA
PUSH DE ; Store DE on stack ... back 20F1
PUSH DE ; Store DE on stack D5
RET ; Return to BASIC C9
[/CODE]
This ...Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... ; Loop back -6 bytes 20FA
PUSH DE ; Store DE on stack ... back 20EF
PUSH DE ; Store DE on stack D5
RET ; Return to BASIC C9[/SIZE][/FONT]
Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... ; Loop back -6 bytes 20FA
PUSH DE ; Store DE on stack ... back 20EF
PUSH DE ; Store DE on stack D5
RET ; Return to BASIC C9[/CODE]
Thank ...Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…
... back -6 bytes 20FA
200 PUSH DE ; Store DE on stack ... back -17 bytes 20EF
260 PUSH DE ; Store DE on stack ...
360 RET ; Return to BASIC C9[/CODE]
It ... quick compared to the BASIC program:
BASIC - approx. 45 seconds ...Cool BASIC tricks and tips!Following on from Dunny's excellent suggestion of a compendium of BASIC tips + tricks, I believe it would be better to have a topic dedicated to it. …
... wrote the routine in Sinclair BASIC to ensure I understood how ... double height character routine in BASIC that is as quick as ... the method used in BBC BASIC MODE 7 i.e. you ... BASIC routine is that it uses 1.5K of memory to store ...
