Search found 1006 matches

by mrtinb
Tue Sep 17, 2019 7:51 am
Forum: ZX BASIC
Topic: Odd LIST bug/behaviour
Replies: 2
Views: 70

Re: Odd LIST bug/behaviour

I think the length is used to quickly find the next line when finding a line number for GOTO or GOSUB.

Or as you found out yourself: Find the line to edit it. So anytime you have a line number, the ROM uses the length of the line to quickly skip down to the line searched for.
by mrtinb
Tue Sep 17, 2019 7:37 am
Forum: Hardware
Topic: I released my ZX81+35 ZX-81 clone design files on Github
Replies: 17
Views: 545

Re: I released my ZX81+35 ZX-81 clone design files on Github

Sorry I don’t see the point of yet another replica.

There’s already Grant Searle’s version, and ZX96, ZX97, ZX2000.

If I would build my custom ZX81 it will probably be ZXNU from ZXTeam. It also uses standard components and has build-in flash drive.
by mrtinb
Sun Sep 15, 2019 10:23 pm
Forum: GAMES
Topic: 1 Karat
Replies: 0
Views: 49

1 Karat

Hi Dr Beep :)

I’m very impressed with your game 1 Karat Bejeweled clone in 1k with hires graphics.

That’s a great challenge. Not too easy not too hard.
by mrtinb
Sun Sep 15, 2019 5:03 pm
Forum: GAMES
Topic: Oh no not again - ZEDRAGON II
Replies: 44
Views: 8152

Re: Oh no not again - ZEDRAGON II

This game does not only need a ZX81 but the ZXpand expansion as well. Maybe your emulator version does not support that
by mrtinb
Sat Sep 14, 2019 3:46 pm
Forum: Sinclair Misc
Topic: Looking for a book
Replies: 7
Views: 195

Re: Looking for a book

I’ve just bought the book used on Amazon for under €9 incl. shipping. We’ll see when it arrives. :)
by mrtinb
Sat Sep 07, 2019 11:05 pm
Forum: Hardware
Topic: 32 kb ROM patch.
Replies: 9
Views: 253

Re: 32 kb ROM patch.

Reading zxdocs I see what you say. Basic Vars can be above $C000, but Basic code cannot because the D-file has to be below. 48K RAM RAM is located at 4000h-FFFFh, same restrictions as for 32K RAM apply. The memory at C000h-FFFFh can be used as data storage only, but not for machine code execution, a...
by mrtinb
Sat Sep 07, 2019 10:37 pm
Forum: Hardware
Topic: 32 kb ROM patch.
Replies: 9
Views: 253

Re: 32 kb ROM patch.

I think we misunderstand each other.

I asked: Why not set the RAMTOP to FFFF?

Because this memory will be fine for all except executing ML.

I assume Basic lines can be there, and I assume Basic Vars can be there. Only problem will be if D-File is on top of the $8000 address.
by mrtinb
Sat Sep 07, 2019 12:01 pm
Forum: Software
Topic: Memotext & word processing in general
Replies: 83
Views: 15606

Re: Memotext & word processing in general

Paul wrote:
Thu Aug 15, 2019 5:51 pm
The tape version for zxpand is now being tested.
Hi Paul :)

Anything keeping you from sharing the dumped ROM? I know I will not be able to print without one of Memotech”s I/F, but I’m curious to see the software. And maybe I can use it with ZXblast dump feature, or patch it for ZXpand.
by mrtinb
Sat Sep 07, 2019 7:14 am
Forum: Hardware
Topic: 32 kb ROM patch.
Replies: 9
Views: 253

Re: 32 kb ROM patch.

But this is only a limit for ML. Basic should have no problem using all memory, right?

This modification will be to set the RAMTOP, so you don’t need to set it yourself with POKE/NEW, right?

Why not test the full RAM, to get RAMTOP set right from the start.