Search found 192 matches

by zsolt
Tue Dec 25, 2018 12:06 pm
Forum: Welcome Area
Topic: Merry Xmas and Happy Holidays
Replies: 9
Views: 1435

Re: Merry Xmas and Happy Holidays

Merry Christmas to all,
Zsolt
by zsolt
Sun Nov 11, 2018 6:44 pm
Forum: ZX BASIC
Topic: SPeccy ON the ZeddY
Replies: 100
Views: 22346

Re: SPeccy ON the ZeddY

Hi Siggi, No, these are ZX81-specific patterns, but ... In SPONZY they are available as UDGs ( chr$ 144 ... chr$ 164 ), which are defined during the startup: L0000: out ($FD),a ; Switch NMI off! LD DE,$FFFF ; Set pointer to top of possible physical RAM. JP L11CB ; Jump forward to common code at STAR...
by zsolt
Fri Nov 09, 2018 1:51 pm
Forum: ZX BASIC
Topic: SPeccy ON the ZeddY
Replies: 100
Views: 22346

Re: SPeccy ON the ZeddY

Hi,
siggi wrote:
Fri Nov 09, 2018 11:05 am
And is it not possible to have only one rom (including Erik's patches)?
It is more than possible :D just use the sponzy2018.rom above - it contains Erik's patch.
Regards,
Zsolt
by zsolt
Thu Nov 08, 2018 5:12 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 2433

Re: Possible bug in ZX81x2 ROM ?

Moggy wrote:
Fri Nov 02, 2018 8:58 pm
Slow down Zsolt I'm running out of EPROMS!! :lol:
Sorry Moggy, here is a newer one. :lol:
Zsolt
by zsolt
Thu Nov 08, 2018 5:00 pm
Forum: ZX BASIC
Topic: ZX81X2.ROM - and the big bang
Replies: 31
Views: 3271

Re: ZX81X2.ROM - and the big bang

Hi, I have made some changes in the 'series generator' routine. In the 1st round of the generator loop the operands (and the results too) were zeros. The improved version skips this 1st round, so saves some times: ; ; The initialization phase. ; .db $3A ;;mul-by-2 2*x DEFB $C0 ;;st-mem-0 2*x DEFB $0...
by zsolt
Fri Nov 02, 2018 8:38 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 2433

Re: Possible bug in ZX81x2 ROM ?

Hi,

The 'MODULUS', the 'TEST 5 SPACES', the 'COPY A FLOATING POINT NUMBER' and the 'STR$' routines have been moved back to their original location. :D

Enjoy,
Zsolt
by zsolt
Tue Oct 30, 2018 10:47 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 2433

Re: Possible bug in ZX81x2 ROM ?

Hi Siggi, the C compiler z88dk also can use the ZX81 math routines in rom to do floating point calculations (depending on the linked math lib). As I understood the source files, it uses RST $28 to call the rom math routines. Does that still fit to your rom? The only difference was the address of the...
by zsolt
Tue Oct 30, 2018 2:19 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 2433

Re: Possible bug in ZX81x2 ROM ?

siggi wrote:
Tue Oct 30, 2018 9:38 am
there is still a problem when running the demo...
It is very likely that there are another direct calls to the changed ROM areas... :cry:
by zsolt
Mon Oct 29, 2018 4:53 pm
Forum: ZX BASIC
Topic: ZX81X2.ROM - and the big bang
Replies: 31
Views: 3271

Re: ZX81X2.ROM - and the big bang

Hi,
A newer version is available here.
Regards,
Zsolt
by zsolt
Mon Oct 29, 2018 4:46 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 2433

Re: Possible bug in ZX81x2 ROM ?

Hi,

The 'MODULUS' subroutine is now in its original location (1C37). :D Thanks Greg!

Regards,
Zsolt

Edit: the TEST_5_SP routine too (see here)