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128k RAM paging from BASICI'd always thought that OUT had to be used to page RAM, which from BASIC would be an "OUT 32765,ddd" command, although I don't know if just doing tha…
... to be used to page RAM, which from BASIC would be an "OUT ... system variable) will switch in page 'n'. I suppose that means ... -
Newbie Spectrum developer advice ....Hi, Im new to the site and to spectrum developing - well, not quite, I wrote Spectrum programmes in Basic 30 years ago but then went off into the wo…
... Spectrum 128k is simple enough. However, making use of the extra memory from BASIC ... LET. Also, if the top page is going to be swapped ... which are in the top page.
More of a ... extend into the top page before the actual BASIC code ever did ... -
Detecting TR-DOS from BASICIs there a simple (or contrived :D ) way to detect the presence of a TR-DOS/Betadisk interface from BASIC? For fairly obvious reasons this can't rel…
... a TR-DOS/Betadisk interface from BASIC?
For fairly obvious ... -
how to pass arguments from Basic to MC ?can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this: PRINT USR xxxxx, arg1, arg2:…
can someone explain me (or give some link) how to pass arguments from basic to machine code? i mean something like this:
PRINT USR xxxxx, arg1, arg2: ...
or so... -
ML routines from BASICCan anyone tell me which registers should be saved and restored when calling a ML routine from BASIC? How can one know which registers are modified …
Can anyone tell me which registers should be saved and restored when calling a ML routine from BASIC?
How can one know which registers are modified inside a system routine?
Should the stack be also changed? -
Printing in 64 columns, from Basic?Not strictly a Sinclair Basic question but... Is there any known machine code utility that allows something similar to PRINT AT that can be called fr…
Not strictly a Sinclair Basic question but... Is there any ... AT that can be called from Basic but uses 64 or maybe ... />
I'm creating small Basic programs that allow me to ... that's easy to call from Basic? Thanks! -
Switch 128kb banks from Basichello! Please help to [U]correct[/U] switch 128kb pages from Basic. So, I remember, need to do: out 32765,17 e.t.c but before, i must to change some…
... ]correct[/U] switch 128kb pages from Basic.
So, I remember, need ... -
How much ram has my ZX Spectrum?How can I see how much ram my ZX Spectrum has? C64 has this info in the title screen, the Spectrum not. Thanks! Micky
[QUOTE=-Micky;410175]Thanks! Gives: 41473. It is a ZX Spectrum with 48K.
Micky[/QUOTE]
Or it could be any 128K model, as they will report the same amount of memory from BASIC. -
How do i learn to programAll the years i had a computer the only one i could program was the Texas Instruments Ti99/4a and when using extended basic with its so simple sprite…
...
Poke these numbers into memory from basic, (poke 32767,63 : poke ... the screen is stored from memory addresses 16384 to 23236 ... bit of memory where it gets instructions from. Every time ... memory) or writes to memory (LD (BC),A) and increases PC. In BASIC ... -
Games cracking...A question for the crackers out here.... What was your very first game you cracked and for how long were you 'in clouds' of it? My very first progr…
... wulf" conversion to three-part: Basic, screen and one code, the ... parts are poked directly into memory from Basic. My first real crack with ... really protected loader was "Ethnipod" from Your Sinclair, beacuse I wanted ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... mode that needed extra screen memory from BASIC unless the ROM was given ... the ability to relocate the BASIC program. You would need a ... code routine to relocate any BASIC you'd already entered, switch ... the middle of the screen memory map so the system variables ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... mode that needed extra screen memory from BASIC unless the ROM was given ... the ability to relocate the BASIC program.[/quote]
The ... code routine to relocate any BASIC you'd already entered, ... the middle of the screen memory map for the system variables ... -
Location of variableHi everyone When basic makes an array how to you find out the location in the ram of where the data is stored. :) Also, does it store the values in…
... can be referenced directly in memory with PEEK & POKE relatively ... numbers directly in memory from BASIC - ie. without using the BASIC arithmetic functions - isn ... -
Loading a screen in to memory...Hi Folks, I want to load a SCREEN$ in to memory and save it out to RAM disk without it being displayed on the screen. I am worried about over writi…
... CLEAR 32767 means that all memory from address 32768 to 65535 is ... 't be used by either BASIC or the stack.[/QUOTE]
memory from BASIC. Basically I want to safely ... non-video RAM back to BASIC for use.
Paddy -
Loading a screen in to memory...Hi Folks, I want to load a SCREEN$ in to memory and save it out to RAM disk without it being displayed on the screen. I am worried about over writi…
... 't want to loose that memory from BASIC. Basically I want to safely ... non-video RAM back to BASIC for use.
Paddy ... use CLEAR again to release memory back to BASIC. -
Storing and displaying attributes...Hi Folks, I have a requirement to store and then redisplay a line of attributes from the screen. For example: 100 DIM a$(1,32) 110 LET line=10 120…
... want a clever trick in BASIC? You obviously haven't read ... ]Copying a SCREEN$ in ZX BASIC in 1 second?![/thread]
memory from BASIC as though it was defined ... -
Memory questionsQuestion 1: PRINT PEEK 23732+256*PEEK 23733 returns 65535 for a 48K Spectrum and 32767 for a 16K Spectrum. PRINT PEEK 16388+256*PEEK 16389 return…
... to check the amount of memory from BASIC all you need is:
from the keyboard. To create the ... 16427[/code]
Remembering that BASIC variables are signed 16-bit ... -
i need a sideways scrolling program written in basicso like ghosts and goblins it scrolls along with the player. i had help with this before in making a tunnel game but this time i need it to be a able…
... can also be achieved in BASIC games by resorting to ... to copy and move screen memory around. If you understand the ... this thread [/url] about copying memory from BASIC, you could work something out ... arcade games with Spectrum style BASIC.
If it has ... -
i need a sideways scrolling program written in basicso like ghosts and goblins it scrolls along with the player. i had help with this before in making a tunnel game but this time i need it to be a able…
... can also be achieved in BASIC games by resorting to ... to copy and move screen memory around. If you understand the ... this thread [/url] about copying memory from BASIC, you could work something out ... arcade games with Spectrum style BASIC.
If it has ... -
128k Page FlippingOver on adverts, AOwen wrote the following: [quote=aowen]The trick, as I understand it, is to redraw the whole screen each time at #c000, but point…
... point the ULA away from the screen you're ... 0:
page screen 1 into #c000
128K).
For comparison ...
Point ULA at screen page 1
Point ULA at ...
1. Only the screen memory, not the whole 16k is ... -
What memory pages are being used in a +3DOS disk operation?To make a long story short: what pages are in use by +3DOS while doing read operations from the disk drive? Now, for the details, for those interest…
... into pages is really straightforward: from BASIC a POKE 23388,16+n ... -loaded block into their right page. Then, the next block, and ... , I built the contents of page 7 from the part loaded at ... a 128K game (which could use nearly all the available memory in ... -
How do I avoid BASIC becoming corrupted on returning from a M/C routine?I'm having trouble with my BASIC program becoming corrupted on returning from a m/c routine which sets all the registers (including the shadow regist…
... trouble with my BASIC program becoming corrupted on returning from a m ... registers or memory locations when calling a m/c routine from BASIC, and ... -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... graphics instead of page 2 due to the memory contention issue).
128k editor, if page 7 is mapped in ... the stack from page 5. Does this not corrupt the basic program in ... +3, although info on the 128k memory model in particular would be ... -
Velesoft's ZX128+2 with 1.5MB memoryMy old ZX128+2 PROFI (grey model - spanish version) for sale here: [url]http://aukro.cz/super-zx-spectrum-128-2-1-5-mb-i2738723874.html[/url] Back s…
... switching between systems from basic.
- contain MB02+ memory in full configuration ... 8-32 different ZX roms from ZX basic.
- implemented TR ... from ZX via special utility. User can change any 16kB rom page ... -
Zero 0.6I'm pleased to announce that I've released Zero 0.6. There are some comprehensive changes in this release including moving to .Net 2.0, removing Slim…
... Kempston Mouse emulation to Pentagon 128K.
+ Reworked sound ... Chris Cowley).
+ Added Memory Execute breakpoint condition to debugger ... save data into any RAM page (for 128K and above).
... with trapping of SAVEs from BASIC, wherein the user wasn ... -
The history of ESXDOS, the DivMMC and the DivMMC EnJOY![img]http://benophetinternet.nl/hobby/divmmc_history/1%20esxdos.jpg[/img] These are the stories behind esxDOS, the most popular operating system e…
...
Full TR-DOS support from BASIC
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... +3 except it uses page 7 so it suxx)
memory from 32K to 512K max.
128K menu and basic (like plus-d), from the hardware ... -
So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
... #0D ; hide the M/C from BASIC
Call48 RST #28 ; call ... 's a tiny BASIC program to poke it into memory:
(NOTE ... 'interface routine'
Since all 128K Spectra uses the RST #28 ... -
Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…
... memory to use the computer's capabilities. The MSX had 128K from ... on the MSX1 they are page-flippers or character scrollers.< ... to write playable games even from basic using these hardware sprites ... not possible to do them from basic. Also, hardware sprites do ... -
Timex Sinclair 2068Hi guys. This is my first post here, the first of many, I hope.. :) I have a Timex Sinclair 2068 but don?t know much about it. It was given as a gif…
... up a lot of memory, that's why they ... up less memory.
Try Sample Tracker from this [ ... .php?pg=tools-en"]page[/URL]. You will need ... emulator. Go into 128k mode, choose "128 basic" from the menu, type ... Then do a 'LOAD ""' from tape as usual. With the ... -
Noob to Z80 needing +3 helpI'm quite new to z80 programming, but i'm attempting to write some kind of windowing system that will run alongside BASIC on my +3 with Kempston mous…
... off the end of the basic line from your machine code routine ... somewhere defining whether we started from BASIC or directly (so i know ... page in ROM 3 and RAM 0, and somehow replicate the basic ... +3, although info on the 128k memory model in particular would be ...
