Search found 1008 matches

by mrtinb
Sat Sep 21, 2019 6:01 pm
Forum: Software
Topic: Load files to any memory location without ZXpand
Replies: 3
Views: 103

Re: Load files to any memory location without ZXpand

olofsen wrote:
Sat Sep 21, 2019 9:19 am
LET LIKES=LIKES+1 :)
Now there’s no excuse for not using your great emulator Olofsen.
by mrtinb
Fri Sep 20, 2019 10:10 pm
Forum: Software
Topic: Load files to any memory location without ZXpand
Replies: 3
Views: 103

Load files to any memory location without ZXpand

Some storage devices like ZXpand can load a binary file to any location in memory. This is convenient when you want to load above RAMTOP, or load a machine code program to memory between 8k - 16k. With help from the online emulator JSZeddy , you can create .P files that load to any location in memor...
by mrtinb
Tue Sep 17, 2019 7:51 am
Forum: ZX BASIC
Topic: Odd LIST bug/behaviour
Replies: 2
Views: 101

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: 628

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: 1
Views: 119

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: 8243

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: 279

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: 288

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: 288

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.