-
128 ROM paging alternativeWould this work (with the appropriate code in each ROM)? [code] ; 128 rom paging routine ; use rst 28h with call address stored after restart ;;rom…
... ROM)?
[code]
; 128 rom paging routine
; use ... , bankm ; hl holds address of system variable
set 4, (hl) ; set ... , bankm ; hl holds address of system variable
res 4, (hl) ; set ... -
what extra port for extra memory ? (256K, 512K, 1024K, etc.)I know that Pentagon uses some extra bits from port 7FFD for extra memory pging: - for 512K model, bit 6 & 7 of port 7FFD - for 1024K model, bit 5, 6…
... into account the actual BANKM system variable. By using those bits for ... the Basic command SPECTRUM on +128/+2, that also turn that ... -
I forgot which system variable I need...... to prevent the message 'start tape, then press any key'. I saw the system variables list but it's not helping. I know I used one poke to bypass t…
... to prevent the message 'start tape, then press any key'. I saw the system variables list but it's not helping. I know I used one poke to bypass the messagem but I can't find it. :( -
A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... ,1,1}, {0,128,120,2,0}, {0,128,56,2,0 ... /> };
// Attach C Variable to data Declared in ASM ... -
New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…
... FLAGS
This system variable contains various flags controlling the ... Basic system and generally should ... in 23560 (the LASTK system variable) and bit 5 ... respectively. POKEing this system variable will affect the appearance ... -
128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…
... is to run, then the system variable at 5B5Ch (23388) must be ... port.
On the 128 and +2, memory is entirely ... the 128k editor and menu system; ROM 1 contains 48k BASIC ... typical bank switch on the 128 is:
LD A,(5B5Ch ... -
Paging MemoryAny idea why this short piece of code doesnt work, just crashes. I am just messing with paging memory in and out (not achived this yet) and reading t…
... top 16k and keep the system variable at $5b5c current with the ... bus value is writed to 128 page port(FF or attribut ... memory paging(OUT 32765,48 ), 128 port reading / writing is ignored ... -
Probing the variables in 128K modeHello again! Briefly, I'm writing an m/c routine to read some BASIC variables. So, before I start, I try to get an idea for the structure of how var…
... two differences from the original 128 but nothing significant unless you ... which uses only that single system variable works differently in the 128K ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... setting bit 4 of FLAGS (system variable at address $5C3B) will cause ... famous example, but Short Circuit 128 as I mentioned earlier is ... differences. The Z80 in a 128 machine is slightly quicker than ... behave.
10) The 128 ROMs changed between each of ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... FAQs, but the reasons for 128 issues are as follows :
system variable at address $5C3B) will cause ... -
BASIC error messagesDoes anyone know what all the numbers mean after the various error messages in Sinclair BASIC? Does anyone know how to instigate each error type?
... reinforces my belief that the 128 ROMs were just a joke ... effects, by POKEing the error system variable, like the "reset to 48K ... -
'orange' on a spectrumalways wondered why spectrums could never seem to achieve the colour orange? wasn't one of the default colours, and don't remember seeing anything th…
[QUOTE=aowen;293456]The 128 Basic has no support for ... a read/write 2 byte system variable which pointed to the current ... />
But, with the 128K system evolving from the 48K BASIC ... -
Interlace demoSorry to reference another thread like this, but in the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?p=313428#post313428[/url] …
... alloted modes (48 and/or 128 and/or USR 0 modes ... is MEMPTR (sounds like a system variable).
Also, Phil, is ... -
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 …
... It will still work on 128 models in 48 mode without ... br /> ld hl, chars ; address system variable
ld (hl), 0x00 ; ... br /> ld hl, udg ; address system variable
ld (hl), 0x80 ; ... /> ld sp,colour_map+(16*pixel_row)+(128*char_row) ; set the stack ... -
Jumping to BASIC after importing 23296,1703Sorry for the confusing title. :-D Now that I've learned how to stop a game from starting after loading (in Fuse and Specemu), I have a few more que…
... set the stack and ERR_SP system variable before jumping to the BASIC ... /> res 4, (iy+1) ; clear 128 mode bit in FLAGS
Transferring games into MicrodriveLast week a big pack of empty microdrive cartridges arrived, and now I'm ready to playing with my little microdrive equipped speccy. One of my aim w…
... RAMT" is the last system variable at location 23732. I seem ... the image avoiding the system variables and BASIC area ... boot a game. The system varaibles for a 48K ... enough space of say 128 BYTES, it would be ... -drive then maybe the system area could be minimised ...+2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …
... functionality - port $7ffd for 128/+2 and port $1ffd for ... $7FFD
; into new system variable BANK_M ($5B5C).[/CODE]
< ... br /> And manipulating the FLAGS system variable - again description by Paul Farrow ... ?p=502320"]Supertest 128 loader[/URL] thread!SE Basic Type-ins^Pete suggested creating a sticky thread for SE Basic discussion. I thought a Type-ins thread might also be useful. Up to the mods if they want to ma…
...
; so look at the system variable PROG
dec hl ; move ... ; leap back to the operating system.
push af ;
call ... question mark instead.
cp 128 ;
jr c, fchr ;
Minor Update to Gasman's Midi2BEEPDon't know whether this is worthy an announcement, but for those of you who enjoyed Gasman's midi2BEEP utility, a new variant has been made called mi…
... hardware as well as the 128 hardware, and one of ... uses the partial decoding of 128 and the fact that ... ports to write to the 128 and Timex register ports ... stack and sent to the 128's data port. The ... colour is grabbed from the system variable and rotated to the ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... Sailor!"
; POKE the UDG system variable and store the UDGs somewhere ... /> jr c, prntqm
cp 128
jr c, fchr
Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
...
; so look at the system variable PROG
dec hl ; move ... the
push af ; operating system.
call doit1 ;
pop ... a question mark
cp 128 ; instead.
jr c, fchr ...Proportional Print Routine...Hi Folks, Does anyone know of a good proportional printing routine for the ZX Spectrum? Ideally I am looking for something that prints with charact…
... ]the [B]ATTR P [/B]system variable and in one command set ... ]= 64
[B]FLASH [/B]= 128
[B][Edit] [/B ...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…
... />
ld hl, (0x5c53) ; store system variable PROG in HL
dec ...
ld de, (0x5c4f) ; store system variable CHANS in DE
sbc ... works just fine on Spectrum 128/+2/+2A/+3 and even ...saving part of a BASIC programHere's a short routine to save part of a BASIC program. The idea is that it can be merged into a program and then used to save sub-routines, etc. to …
... line instead of a separate variable. The first run assembles the ... be used to set DATADD (system variable "address of terminator of last ... $+l$+CHR$ k0+CHR$ VAL "128"+(l$ AND apv)+((CHR$ k0 ...So easy to use.Back in the 90s I was off work for 3 months following an operation, anyway in my boredom I dusted off my old speccy+ and the manual, and got my head …
... the [B]ATTR P[/B] system variable.
where [B]ATTR ... ) +
BRIGHT ( 64 ) +
FLASH ( 128 )
so if I ...Poking a string to memory...I'm looking to poke a string of characters including colour control codes to memory, I'm currently doing it by hand: 16,2,19,1,22,1,1,144 That equa…
... 36,14,0,64,88,128,2,41
... 64+256*88
128 80 N/A Length in ... bytes i.e. 128+256*2
2 ... in bytes i.e. 128+256*2
41 ... (23563 & 23564) system variable to point at the default ... address stored in the UDG system variable (23675 & 23676). ...A z88dk + sp1 demo (with source)Since nowadays people are still wondering about how difficult it is to make something in z88dk, I thought I just put a very simple demo to show how e…
... ,1,1}, {0,128,120,2,0}, {0,128,56,2,0 ... /> };
// Attach C Variable to data Declared in ASM ...
