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Help With AY Music Program in BASICHi, last year I started writing a BASIC program for making and recording AY Music. I thought it would be easier than learning how to use Soundtracker…
... I started writing a BASIC program for making and ...
[b][u][u]BASIC listing:[/u][/u][/b]
out as empty.
285 ... to record 0 to end/switch off record feature
350 ... LET v$="V14": REM Turns out there are 15 volumes, ... -
Switch from 128k BASIC to 48k BasicHello, Is there a way to start off running a program in 128k basic (so that you can use the ramdisk facilities) but then switch back down to 48k bas…
... way to start off running a program in 128k basic (so that ... facilities) but then switch back down to 48k basic before you run ... suggestions but once I switch down to 48k basic the program stops ... -
Problem with se basicI use MB02 memory paging (ram 16kB instead 48rom) and via one OUT 23,xx can switch between original 48 rom and SE ROM. But if I write basic program i…
I use MB02 memory paging (ram 16kB instead 48rom) and via one OUT 23,xx can switch between original 48 rom and SE ROM. But if I write basic program in 48 basic and switch to SE BASIC then show basic incorrect. Why ? -
+3e with DivIDE systemsIf we replace old R-GAL chip on original DivIDE with new XR-GAL (this is only firmware for GAL chip) then will possible DISABLE or ENABLE any DivIDE …
... /> LD A,192
OUT (227),A
XOR A ... />
This routine reset DIVIDE paging port and disable system.
If any code switch +3 basic to USR0 mode (SPECTRUM command ... active and switch off true allram 16kB mode on DIVIDE (switch off any system ... -
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…
... since you're returning to basic you have to be careful ... what you page in and out. Perhaps clear RAMTOP below the ... Z80CPU. And IN #1FFD for switch off turbo (3.5MHz mode). Real ... value). If you disable memory paging(OUT 32765,48 ), 128 port reading ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... ;start:
di ; switch off the 50Hz (or 60Hz) interrupt ... br /> defb "SE" ; SE BASIC identifier string
; ... unstack HL
ei ; switch on interrupts
ret ; ... ld bc, paging ; 16-bit I/O
out (scld), a ... -
ZX Spectrum (16K) sound/beepHi all, I think I'm in right place now, I've tried to find an answer how to generate two channel sound using ZX Spectrum 16K. Only think I've found …
... found so far is that Basic OUT can be used to control ... in address 254, to switch speaker on/off to generate square wave ... -
WiP New Utility TAPonDSKThere are a few utilities that transfer tape contents to +3 disk but most, if not all, require manual intervention to change the loader and/or rename…
... utility which decodes the basic loader and attempts to ... REM statement which turns of paging before launch.
... additional file just rename the basic loader to DISK
| ... the BASIC loader and rest of code following.
| -b switch off ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... RAM machine where you could switch out the ROMs to an all ... address space. This includes paging in/out the ROMs and any of ... each line entry that Sinclair Basic does. I absolutely hate the ... there are a hundred clones out there. Timex machines *probably* ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... space. This includes paging in/out the ROMs and any ... CoCo 3 experience. And paging out any place in RAM ... line entry that Sinclair Basic does. I absolutely hate ... are a hundred clones out there. Timex machines *probably ... machine with all off the shelf chips. -
It's fitting...... that in the very month that the 25th anniversary of the Speccy falls on, I'm just finishing up making my first ever Spectrum peripheral. It's a …
... tested the ROM paging part properly with a replacement BASIC ROM image ... cool to be able to switch to and from the Spectrum ... the other one with a BASIC OUT command (since the two ROMs ... -
Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…
... low will also function to switch off the +3 motor once ... ]
This OUT's set on russian ZX ... On original old Pentagon machines OUT 1FFD work same as ... 128 = same function as OUT 7FFD,1/5/7. ... OUT 1FFD,xx ignored.
Warning: I you use both paging ... -
Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
...
"Sinclair Spectrum BASIC programming", by Steven Vickers, 1982 ... in this book are out of date but it ... instruction. Now I have missed out some important information:
... follow... Interrupts are automatically switch off during this magic 'CALL'. ... -
Programming flash eprom on DIVIDE+Can you test it on DIVIDE PLUS ? [url]http://velesoft.speccy.cz/other/flasher-divide-plus.zip[/url] (This flash utility is WINSTON's flasher for dia…
... of it being written in BASIC and love the design based ... in USR0 mode with enable paging ?
And 128K mode ... switch 128kB enable/disable (yes, it's possible disable 128kB memory paging ... via OUT 32765,48 and in ... -
Problem with se basicI use MB02 memory paging (ram 16kB instead 48rom) and via one OUT 23,xx can switch between original 48 rom and SE ROM. But if I write basic program i…
... paging (ram 16kB instead 48rom) and via one OUT 23,xx can switch ... write basic program in 48 basic and switch to SE BASIC then show basic ... QUOTE]
Because SE Basic is radically different from the ... don't exist in SE Basic and vice versa. Only ... -
MicroSpeech Entry PointsHello Hardware Guys, Do any of you have any information regarding the MicroSpeech ROM. In particular: 1) Do you know what addressess cause it to p…
... captures the assignment of BASIC variables because it picks ... the uSource whcih monitors for BASIC variables "assemble", "debug", "forth ... br />
ROM paging in/out toggles on executing the opcode ... memory at 3000h sets intonation off.
- Writing to ... -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... - what equivalent of this OUT would be on Spectrum + ... 't do it from BASIC in USR 0 mode ... because BASIC is in ROM3, and ... you make a switch you've paged out BASIC and your program ... BASIC will cross one of the trap addresses triggering the divIDE paging ... -
Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …
... /> Examples of MB-02+ memory paging:
- OUT 23,BIN 01000011 - connect ... and modify rom from basic. Also is possible switch between your own ... ZX rom via one OUT command in basic. (OUT 23,64+5 = own ... -
Basic sourceAre there any utilities available that will extract Basic source to a text file, or insert it from a text file into any of the common formats lie z80…
... br /> [*]Load the TXT2Emu BASIC loader from the TAP file ... the program will switch to the BASIC editor and display ... loading from where it left off. On the 128 models ... error, ENTER, EDIT (to switch back to the upper screen ... save the code back out as text again? -
What would be the simplest tape loading routine?I'm searching for some small assembly snippet I can use to load a (headerless or not) block from tape into RAM I can embed in my C games to load furt…
... and/or modify) the OpenSE BASIC code (derived from the SAM ...
ld_bytes:
di ; switch off interrupts
inc d ; reset ... , 15 ; set border
out (ula), a ; to black
or %00001000 ; set MIC off
out (ula), a ; change the ... -
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…
... any way to check it out from BASIC (without breaking the program ... the FILES function in Liberty Basic.
That said, however, and ...
(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 …
... from shadow rom back to basic rom) still work then. ... #92 does the actual switch. So the method still works ... ; OO = 1bis off
CALL delay
OUT (255),A ; OX ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... br /> ld bc, paging ; VRAM / ROM
out (scld), a ; ... /> new_0:
di ; switch off interrupts
ld a, 255 ... new_48:
ld bc, paging ; select paging
ld a, %00110000 ... lock paging, ROM 1, VRAM 0, RAM 0
out (c ... -
SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…
... 0x78 ; mask off bit 3-6 ... /> ld bc, paging ; page out VRAM
ld ... de, hl ; switch destination and base ... -
FUSE serial communication sample anyone?Hi, in [URL="http://manpages.ubuntu.com/manpages/precise/man1/fuse.1.html"]FUSE man pages[/URL] one finds switches for serial comms. By using --inte…
... control signals you can switch off handshake as described later ... negate bit 0
out (RS232_DTA),a ; out bit
... ,#CTS_OFF ; xxx0xxxx (cts off)
out (RS232_CTL),a ; raise ... br />
/* back to basic */
return 0;
}[/ ... -
Sound interference and game errorsHi everyone! Here's some "issues" I have spotted. I'm still pretty new to ZX Spectrum computing/gaming...Just so you know. :) I'm using a Commodore…
... games don't have a BASIC loader, they just load a ... system variables & has some BASIC startup code embedded within it ... demagnetizer, which would sort it out. (This is presuming that there ... joystick i/f fault
Switch off the Spectrum, remove the joystick ... -
Missing in ActionThe more I go in my loft the more I find "Missing in Action" files . Trouble is I am new to this. I have done the tzx's for them but cannot upload th…
... mentioned above) advising switch off between games is basic advice to new users ... to work and then saved out as individual szxs . So that ... go into all the most basic areas without a hint of ... -
If you had four roms...Just wondering if you were designing a Spectrum from scratch, and you used a 27512 EPROM, which would hold about 4 spectrum roms, what you would inst…
... ... Put in a turbo switch, PC interface, etc, ... still a way to switch off all of the internal ... />
Although I started out programming the z80 on the ... an existing extended memory paging system, I'll probably ... m trying to work out optimal ROM selection to ... -
Memory paging in 128 KB - 64KB RAM possible?I have found a quote in Spectrum 3 manual (available at WOS) -------------------- In the +3, we have crammed in more than twice the amount of memory…
... using a process called
paging - BASIC (and the processor) always 'sees ... /> combination is never used by BASIC[/B]).
---------------------
So ... KB of memory with proper paging?
I always believed no ...
