Sinclair ZX80 / ZX81 / Z88 Forums

Hi, It was a good dump, try to move the trigger line in E.O. (Wav window source), and put it on the down side signal. LoadWav.JPG conflict_zx81_side.wav: Conflict1.P conflict_zx81_side_quieter.wav: (same P file?) Conflict2.P conflict_Spectrum_side.wav: Confict_Spectrum_48k.TZX Have Fun.

Hi Claudius, I redraw the circuit diagram using the old wiring diagram ... on Kicad. I haven't seen your beautiful PDF :lol: :lol: :lol: It was a fastidious work for me, and yours is better. Good job. And thanks a lot. The release 1 and 2 are fully compatible to the ZX81/Spectrum. However in the sec...

Thanks Greg, it's cool !

Hi,
It Seem works on a ZX81 + MEMOTECH/WRX/ZXPrinter !
Why a 48k SPECTRUM ?

The BNC socket is located at the left side... is it a British protocol? Better place all switches, BNC, variable resistors... at the right side... (the right side is always the right side.)

What classic files can I load on my Next? The Next supports NEXs, TAPs (preferred for classic software), SNAs, DSKs, Z80s, SNXs which can be loaded from the browser menu by selecting them with the cursor keys and ENTER (or a joystick and Fire) -OR- by using the SPECTRUM command. (See Chapter 20 in ...

"store demonstrator": https://www.sinclairzxworld.com/viewtopic.php?p=46092#p46092 PCB: http://zx81.ordi5.free.fr/CartesZx81/Timex/StoreDemonstrator/ Just change ASM codes to call all offset @$2000 instead of @$4000, and a simple RUN launch it. Your BASIC/ASM program will RUN with a 1K/2K ZX81/TS100...

Hi Markie_V, To Load a P file in ROM, and auto execute it: Have a look to this tread: https://www.sinclairzxworld.com/viewtopic.php?f=7&t=5531 Only the MEMOTECH MEMOCALC & MEMOTEXT can patch to ZX81 ROM (using a PLA) to start an ASM program. But, Wilf Rigter can do it with a simple ROM patch... http...

Hi Jason, Better to type-ins the listing in text, to copy/paste the code... Reload the Tap/TZX file to debugg it. Include, my updated "Zmakebas" win32/64: zmakebas-1.1.zip The "invaders" BASIC text : ("Zmakebas" old release w32 -TZX not supported) Invaders.zip BASIC codes extracted from EO>BASIC LIS...

10 LET E$="(32 blank chars)" equal 10 DIM E$(32) Don't set a string variable LET A$="ABCD" to use it one time... 10 LET A$="ABCD" (...) 100 FOR A=1 TO LEN A$ 110 LET B=CODE A$(A) 120 NEXT A 100 FOR A=1 TO 4 110 LET B=CODE "ABCD"(A) 120 NEXT A Use integer flags in chars format to preserve memory: A$=...

Hi, I add some new functionalities to suite to a maze adventure: - A dark room status. - A watered room status. - A smoky room status. - A fire room status. -A multi door/key functionalities. Translated in English: TAKE PUT LIGHT TORCH KEY OPEN NESW-UP DOWN I SAVE LOAD LIGHT & BREATH For 5 prompts a...