Sinclair ZX80 / ZX81 / Z88 Forums

Only thing I built in is joysticksupport, when there is room.

So I am almost ready.... This version could be the base for the lowres version with solver so I do a prerelease before finishing it. This version is a game against the computer. Press NL to start Write down the numbers while number is generated When number shows do your calculations until operands a...

Hello MaFli,

Greetings from Boxmeer and welcome.

Johan "Dr Beep" Koelman

ld a,(Line2Text+7) inc a cp 30 jr nz,notLooping ld a,0 notLooping ld (Line2Text+7),a jp main I haven't included the bits to add in line 1 and line 2 etc. but have included the bytes they take up in the byte count. Lardo Above part Can be (-2) ld a,(Line2Text+7) inc a seta ld (Line2Text+7),a sub 30 ...

Computer is cut off after 20 sec.
Now show how computer comes to result and if player of computer wins.

The solver is working, but the computer is cheating sometimes by taking more time than allowed
(the routine is a lot slower on the ZX81 than on the ZX Spectrum) so I need to set a timebreak and don't allow further calculations.

Sometimes I won from the computer and otherway around....

Almost the solver coded. The code is there, but not yet working as on the ZX Spectrum
Size 1142 in hires.
Since hires has at least 256 bytes data it will fit in 1K lowres with solver.
Now to make solver work.

Well, The game needs conclusion. This version has an error in the divisionroutine ( divide by zero is a constant loop). I found some room to repair it so the routines can be used by finding a solution by the computer. The multiplier is slower than a larger cersion so I tested the slower routine with...

I understand your dilemma, but can't it be solved by paging in another ROM?
(S)He who pages in the ROM knows that software might need paging back the old ROM.

I was thinking of putting the score-line 1 lower so I don't need an extra check on outofscreen-character.
( it is here a halfstone, not full from unbreakable brick)