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Copying data between memory banks in USR0 modeI am experimenting with Funky Fungus to load the majority of its data (levels, screens, music etc.) into memory banks 1, 3, 4, 6 and (partly) 7 by sw…
... , then recalling them from BASIC and "pouring" their contents ... use 128 system variables in USR0 mode. The first ... isn't in the top 16K of RAM. CLEAR 49151 ... the trick. The standard RAM configuration in USR0 mode is R ... only page the screen in when you want to ... -
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…
... "'s menu/frontend is written in BASIC; my TZX files include turboloading ... of this BASIC block. As a side-effect ... and then returning to 128 BASIC. Therefore, the PLAY command ... takes advantage of the full RAM.
The TAP ... -
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…
... be used in one of additional DIVMMC ram pages (8kB ram) and RST8 ... address #2000-#3FFF (divide ram page) ?
In 48basic(usr0 mode) is ... visible as UDG char "U" in basic line. CPU see this char ... char UDG "U" + connect divide ram page with PLAY code + call ... -
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…
... code for use in range address #2000-#3FFF (divide ram page) ?[/quote ... channel stuff.
[quote]In 48basic(usr0 mode) is PLAY ... visible as UDG char "U" in basic line. CPU see this char ... char UDG "U" + connect divide ram page with PLAY code + call ... -
Issue 3 board with strange piggy-back boardIn case you are interested. I?ve never seen something like this before. I have an Issue 3 board here. When I opened the case and found a strange pig…
... Hadn't touched the stuff in years!
Well, sure, ... , what's the point in disassembling the interface ROM? If ... simple RAM-checking programme (even in BASIC) and test the upper 32k in ... conjunction with an IN 255 or IN ... -
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…
... ROM 3 (the 48 BASIC ROM). The RAM page at the top ... only be called with RAM page 7 switched in at
the ... below
(right).
In BASIC (using DOS)
(after USR ... -
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 extend ... are needed can be made in programmable RAM. Note that these changes ... /> In order to get fast access to a counter held in RAM, the ... byte in SH-ram that holds the ... -
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…
... designed to run in 48K, using the 8K RAM of a MF1 ... commands in direct mode.
15363 (3C03h) - Call to DOS BASIC by ... 48 uses 112 bytes of RAM in BASIC variables (23734 to 23845) + 256 ... 128 uses *133 bytes of RAM in BASIC variables (23734 to 23866) + 256 ... -
Graphics questionHello. I was wondering, does anybody here know of a method to display a large (as in, the better part of the screen) bitmap/raster image using ZX Sp…
... run this on +3 Basic rather than 128 Basic.
... code running under original Spectrum Basic?[/QUOTE]
As mentioned ... possible to do it purely in BASIC. It might need something along ... it to do a copy in primary RAM - which is easy enough ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... characters that can be defined in udgs? The documentations says the ... replaced by two new BASIC keywords.[/QUOTE]
In BASIC it's 21 ... you own 768 byte font in RAM and pointing to it via ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
[QUOTE=karingal;751275]In BASIC it's 21 ... own 768 byte font in RAM and pointing to it ... 's a method described in the compendium to redefine ... 23606/23607 to my font in ram.
What ... some chars to screen ram then switch back to ... text to screen ram. -
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…
... each banks code loading in sequence specifying the address ... disk and returns to basic, when I call the ... have set the clear command in basic before doing this.
ld a,$10 ; page BASIC ROM
call paginar
RAM 5, 2, 0)
... -
Yet another Windows 8 thread....My old desk top PC gave up the ghost about 6 weeks or so ago. I'm pretty sure it's the hard drive that's packed up, but as much as I tried, I just se…
... of the hard drives are (in the GUI, at least) ... - it's not like in the Win9x days, thankfully. ... Windows 7 has enough RAM (4GB for basic use, 8GB for ... ?).
* In the past I have installed ... a Linux driver, but in the other cases this was ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... 128K: Returns "C Nonsense in BASIC, 1500:3" error after the ... 128K: Returns "C Nonsense in BASIC, 22:1" error after the ... in BASIC" error due to 128/+2 RAM disk commands implemented in ... the two small BASIC management ... -
How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... in BASIC listings from magazines. Then we got a RAM ... pack, and by then I was already writing bits of BASIC ... on the BBC Micro in BASIC (the pinnacle of ... the Amiga in a fast compilable BASIC that I ... /> We all understand information in slightly different ways, I ... -
How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... , way back in 1982. I started with BASIC and then used ... values from registers in locations in RAM, it adds numbers in registers... and a ... on the screen, you could, in BASIC, do:
POKE 16384,255 ... register (the 'a' register in this case), and then storing ... -
How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... if you started messing around in BASIC with POKEs then you know ... -by-heart, since Sinclair BASIC doesn't support hex. Doing ... 12, such that counting in fours gives you 0,4 ... chunks of the Spectrum's RAM begin at 0000, 4000, ... tell you what 6144 is in hex, nor use it ... -
How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…
... you started messing around in BASIC with POKEs then you know ... -by-heart, since Sinclair BASIC doesn't support hex. ... chunks of the Spectrum's RAM begin at 0000, 4000, ... the advantage of hex in the listing where the ... and find the advantage in my own way. Decimal ... -
Read Data from memoryHi there. Not been on this scene for a long time. Does anyone know how to do a routine to read data from memory(peek..etc) rather than using lines of…
... to do a reasonable version in BASIC (eg. Rockfall from C& ... Frogger have also been done in BASIC. Copying the map can be ... done in almost no time at all (see the "quick RAM copy ... using LET" thread in February). What other ... -
Read Data from memoryHi there. Not been on this scene for a long time. Does anyone know how to do a routine to read data from memory(peek..etc) rather than using lines of…
... to do a reasonable version in BASIC (eg. Rockfall from C& ... done in almost no time at all (see the "quick RAM copy ... using LET" thread in February). What other ... Diamond Digger were too slow in BASIC?[/QUOTE]
Hi Battle ... -
UDG tricks?I always enjoyed using [URL="http://www.worldofspectrum.org/ZXBasicManual/zxmanchap14.html"]UDGs [/URL]for the 'sprites' in my games, when I coded th…
... know how to load in custom fonts in BASIC.[/QUOTE]
UDGs ... sets and multiple UDG sets in RAM at the same time and ... suggest you dip into the BASIC manual, specifically the +3 version ... you need to know is in there, and it's normally ... -
Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... either use a real tape in an mono "shoebox" tape ... br />
If the RAM still had a fault, I ... crash. If you can program in BASIC, write a program to ... a simple, but effective RAM test. Alternatively use a ... test cartridge that has a RAM test.
[ ... -
Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…
... either use a real tape in an mono "shoebox" tape ... br />
If the RAM still had a fault, I ... crash. If you can program in BASIC, write a program to ... a simple, but effective RAM test. Alternatively use a ... test cartridge that has a RAM test.
[ ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... 128K: Returns "C Nonsense in BASIC, 1500:3" error after the ... 128K: Returns "C Nonsense in BASIC, 22:1" error after the ... in BASIC" error due to 128/+2 RAM disk commands implemented in ... the two small BASIC management ... -
Chuckie Ess 2 tap doesnt work[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000959[/url] It loads, you press a key and it returns to Basic! Anyone any idea why or got a …
... bytes of RAM, so the Microdrive commands that are in BASIC after the ... was saved, not from the BASIC loader in the TAP file.
All the BASIC loader in the TAP file does is ... m/code (in the free space at the top of RAM) to ... -
Chuckie Ess 2 tap doesnt work[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0000959[/url] It loads, you press a key and it returns to Basic! Anyone any idea why or got a …
... of RAM, so the Microdrive commands that are in BASIC after ... not from the BASIC loader in the TAP file.[/QUOTE ... what was actually in the BASIC loader but the ... TAP in the archive doesn ... br />
Current TAP in the archive:
... -
Scrolling in BASICI remember a few BASIC typeins for other machines that claimed to be scrolling the screen. Obviously vertically its not too difficult - once you dis…
... as it's gonna get in Speccy Basic if you want a ... />
See "Quick BASIC RAM copy" in QuickCopy.TXT in the [url=http://www ... -
Scrolling in BASICI remember a few BASIC typeins for other machines that claimed to be scrolling the screen. Obviously vertically its not too difficult - once you dis…
... Bunny;821484]See "Quick BASIC RAM copy" in QuickCopy.TXT in the [url=http ... -
I feel they could have done this.After reading the ZX Spectrum ULA, I learned about how the ULA detects if the Z80 if going to access memory in the next cycle and stops it if the ULA…
... /> Separating the video RAM from the main RAM would have been slow ... needed two banks of RAM for a basic 16K Spectrum, most logical ... video RAM bank. This would have been quite expensive back in the ... think given the limitations of RAM IC's back at the ... -
Did you choose to have a Speccy or did it just happen that way?A strange question I know, but, the reason I ask is that when we (my family) were looking to buy a computer non of my mates had computers and non of …
... ZX81 with wobbly RAM pack (!) it sparked my interest in BASIC programming, so ... upgrade as I'd written BASIC games big enough to ... carpeted floor) in sock feet and rubbing the RAM chips with tin ... foil - all in accordance with ...
