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The ZX printer buffer in +3 modeI have a few programs on .DSK images that were transferred from Timex disks, but some of them have code starting at 23296. Most of the time the code …
I have a few programs on .DSK images that were transferred ... a crash and use the printer buffer area while in +3DOS? I ... -
Loading schemes18 years ago I hated loading schemes like Alcatraz and Speedlock because they were a b*tch to copy and became unreliable when the tape got older. Now…
... must be stored in the printer buffer (23296) and has to ... about the entry point or register values. From the quick ... have spent too much time on this already... ;-)
...
org 65024
ld sp,24999
ld hl,23296 ... -
Need help with tzxingI recently got a copy of this Polish text game: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006622[/url] I can't make a tzx of it howeve…
Does it load on a real Spectrum?
... $ and some code into the printer buffer (which alters some of the ... there by accident.)
Register B is used as a ... 21 F2 C1
EX (SP), HL ; C1EF E3
JR ... -
Help needed with MIA software with custom (?) loaderHi, I've got into my hands recently a bunch of Polish educational software which are unknown MIA on WOS. I believe they are protected with some…
... RST 20 ; in the C register whilst (ROM)
0x5B2B ... PUSH HL ; Push the address on to the machine stack. ( ... here, within the newly loaded printer buffer:
0x5B80 LD ... /> 0x5BF5 LD (5C3D),SP ; Set ERR SP
0x5BF9 EX DE ... -
Tape to +3 disk transferWhen the first basic part was merged from tape, to be saved to disk, and it looked like this: [img]https://i.imgur.com/UQx1hc2.jpg[/img] how di…
... 16384 will overwrite the screen, printer buffer (there is where every 128k ... dissassembly, we can see that SP register is at 65344 that is ... no CLEAR.
Again, on dissassembly windows we go to ... -
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…
... you a binary number depending on which keys are pressed. Each ... numbered "0"
-------------------------
On 48K without interface 1
On other machines: search in VARS ... to be send to the printer. A zero would mean it ... -
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…
... :
1) Software relies on block of unused bytes ($FF ... />
2) Software assumes the printer buffer is available for code. In ... different to the 48 ROM on 128 machines. In particular ... the 'snow' effect (setting I register between $40 and $7F) will ... -
Help loading OPUS data block ?Hi folks, A while back I obtained a Daton Software Card Games compilation which will be in the next Vault update: http://www.worldofspectrum.org/inf…
... the record:
On 'formatting' level, the disks shows ... ERR-SP, thus forcing another piece of
code in the printer buffer ... decoding routine
is (on the fly) loaded from sector ... br /> BASIC.
All information on disk is accessible in a ... -
Frank N SteinThis one > [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0001849[/url] Always seems to crash about level 7 (maybe a bit more) or so with an …
... far with Spin (debugger keeps on deciding not to fire breakpoints ... jump into the printer buffer) to check the value of SP (to overcome ... used the middle of the printer buffer area as it looks like ... no point in me carrying on as you've found the ... -
machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
... resides in the printer buffer so will only run on the 48K machine ... to the end of the printer buffer.
It then fetches BORDRCR ... bytes to zero (black ink on black paper).
It then ... />
[code]
5B00 LD SP,5BFF
5B03 LD A ... -
machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
... after having put headers on the two files it' ... suitable syntax for the medium on which the game is ... PlusD version is given later on below.
[code]
... game is running it sets SP to P_RAMT I presumed ... can be bunged in the printer buffer to load the two ... -
Empire! Help neededCan anyone convert the listing in the Tipshop to Multiface pokes? Im having a hard time with this game, over 15 years playing it, now I could do wit…
... mode, as it overwrites the printer buffer and system variables.
on the +3 the interrupt vector ... , as the I register is set to $39 on both, so it ... -
Arkanoid Hack - Your Sinclair Smash TipsRemember that Arkanoid hack in YS Smash Tips that didn't work? It does now... [CODE] 10 REM ARKANOID HACK 20 CLEAR 65535: LET C=1: LET D=23295 …
... Speedlock version it is on [URL="http://www.worldofspectrum ... check 2nd decrypter for ld sp,hl
ld a ... ; yes, nop out ld sp,hl
chksp2 ld ... check 6th decrypter for ld sp,hl
ld a ... /> dec hl ; load into the printer buffer
ld (hl),$67 ; ... -
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…
... TECHNICAL INFORMATION
TECHNICAL INFORMATION ON THE INTERFACE BETA
F ... to 'lock' was used on the expansion bus interface, ... EXIT:
31 (1FH) - Register commands from the controller (see ... 23845) + 256 bytes in printer buffer (23296 to 23511) for a ... -
What is the "SPECTRUM" keyword on a 128K?The 128K replaced UDG characters T and U with new commands; PLAY and SPECTRUM (or possibly the other way around.) The manual ([url="http://www.wor…
... routine ONERR is there, on zx128 or +2 it ... OVERW_P EQU #1B72 ; #1B53 on Spectrum128
BANK_M EQU #5B5C ... to use the ZX Printer.
LD SP,(#5C3D) ; ERR_SP. ... placed in the ZX Printer buffer, so you'll better ... not use ZX Printer or anything else ... -
The state of source level debuggingI was just wondering if we can put on a table everything we collectively know about source level debugging for ZX Spectrum to get an overview of curr…
... 0 ; to receive SP
(1) add hl,sp ; hl=sp
(1 ... if buggy is present in printer buffer
[/code]
... first put all other registers on the stack. Then go to ... other work can be done on a PC (i.e. ... be even squeezed to printer buffer. -
The state of source level debuggingI was just wondering if we can put on a table everything we collectively know about source level debugging for ZX Spectrum to get an overview of curr…
... stuff now, heavily based on your work as you seem ... ld hl,7 ; to receive SP and add offset
( ... 1) add hl,sp ; points to caller high
printer buffer
[/code]
[/quote ... can change where the SP lives at any point. -
The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... bit 6 of the I register when a contended RAM bank ... it’s reserved for the printer buffer), but on 128K machines, that’s ... , it will cause a crash on one or the other architecture . -
New Utility to Transfer Z80 Snapshot to +3 DiskSince getting a Gotek for my +3 it has been my go to machine. The biggest downside however is the lack of older games on disk format with pretty much…
... /> -b3 @ space in Print Buffer (23296-23552). Program will scan ... basic code which, when run on a +3, copies the ... code file needs to be on the same disk.
... up to 36 snapshots on each disk which should ... basic code which when run on a +3 saves the ... -
Channel redirectionHi! I need help regarding the following problem. I want a BASIC decoder running on Spectrum, written in assembler. I found the great *LIST routine […
... want a BASIC decoder running on Spectrum, written in assembler. I ... . This routine prints the listing on the channel 2, the screen ... have the listing in the printer buffer. I thought if I poked ... the BASIC listing in a buffer.
Thanks.
48k disk basicWhen trying to use the CP/M colossal cave adventure .DSK file at [URL="http://www.alchemistresearch.co.uk/"]the CP/M section of this site[/URL] I got…
... and get a disk catalogue on a +3, yet retain ... t survive me POKEing the printer buffer with 255 though (shame ... a comp.sys.sinclair posting on 17th Jan 08, and ... Spectrum your code is running on.
I ... many BASIC extension programs are on WoS, but as most ...Unprotecting games without knowning m.c.DivIDE or MB02 users don't need unprotected games, but those who still use the Microdrive, Wafadrive, Timex FDD, +3, Plus D, Disciple or use the new …
... that particular infy lives POKE on a real machine without the ... they don't use the printer buffer and don't overwrite the ...Return to +3 BASIC from 48K mode.Hello Spec-Chums! I don't know if this trick has been posted before, if it has, i apologise, but i have not been able to find it. Anyway, here goes…
... system variables in the former printer buffer are left untouched, a RANDOMIZE ... way back to 128K BASIC on the earlier 128K machines.
Looking for a decent HP laser printer with ePrint technologyLooking for a decent HP laser printer. Must be able to print in colour, and have ePrint technology so I can print using the cloud (without needing th…
... for a decent HP laser printer. Must be able to print ... cloud (without needing the computer on) - printer must also be able to ...OpenSE BASIC 3.1.1The eagle-eyed will have noticed that [url="http://www.worldofspectrum.org/infoseekid.cgi?id=0027510"]SE BASIC[/url] got an update last week. As a te…
... you do any BASIC programming on real hardware or emulators ... data copy machine code command), ON ERROR (error trapping), PALETTE ... RAM formerly used for the printer buffer (directly after the screen) ... 9999 will still execute correctly on the original ROM.
...
