Search found 238 matches

by GCHarder
Mon Nov 04, 2019 11:20 pm
Forum: Sinclair Misc
Topic: ZX81 Academic and Research related articles!
Replies: 0
Views: 74

ZX81 Academic and Research related articles!

https://www.tandfonline.com/action/doSearch?AllField=zx81 Most of these are "Locked", so you can only read the abstracts, which gives you the idea. You can pay to get access if you want. A few are "Open Access", like the Quicksilva article I posted yesterday. Here's another one https://www.tandfonli...
by GCHarder
Sun Nov 03, 2019 11:50 pm
Forum: Sinclair Misc
Topic: Quicksilva article
Replies: 1
Views: 115

Quicksilva article

Hope this hasn't been posted before, the article was uploaded in 2016, so it's pretty new.

https://www.tandfonline.com/doi/full/10 ... 16.1190441

First hand account of working for Quicksilva. Lots of interesting information. Nice downloadable PDF available.

Regards;

Greg
by GCHarder
Thu Oct 31, 2019 9:19 pm
Forum: Sinclair Misc
Topic: Machine Language help
Replies: 4
Views: 278

Re: Machine Language help

Using the ROMs find line address routine at 09D8 LINE-ADDR. may work better. or not, for your REM loop. For a given BASIC line number this subroutine will return the starting address of the actual line or the starting address of the following line if it does not exist (C reset). 09D8 LINE-ADDR PUSH ...
by GCHarder
Mon Oct 21, 2019 10:44 pm
Forum: Emulators
Topic: [Vb81] Test release.
Replies: 20
Views: 3980

Re: [Vb81] Text Compiler Bug

This line...
10 LET X=16623

Produces a false error message!

This line...

10 LET X=Val "16623"

Avoids the error message.

I've seen this bug before with other values as well, weird huh.

See the attached.

Regards;

Greg
by GCHarder
Thu Oct 17, 2019 10:51 pm
Forum: Welcome Area
Topic: Hello from Nottingham, UK.
Replies: 21
Views: 1260

Re: Hello from Nottingham, UK.

Before you type anything in check out the "Type Fantastic" web site.

www.users.globalnet.co.uk/~jg27paw4/typ ... pehome.htm

Regards;

Greg
by GCHarder
Thu Oct 17, 2019 1:27 am
Forum: Welcome Area
Topic: Hello from Nottingham, UK.
Replies: 21
Views: 1260

Re: Hello from Nottingham, UK.

High Rise Hive is a HogRogProg game. See HogRogProg Collection in the games forum for more great games by them. I really like Bug Burst myself.

Regards;

Greg
by GCHarder
Wed Oct 16, 2019 9:46 pm
Forum: Software
Topic: ZXPand Organizer
Replies: 17
Views: 1356

Re: ZXPand Organizer

I've updated the program with line... 9997 IF PEEK 49151>MAX THEN POKE 49151,0 Also the HogRogProg and Benham Disk programs. This should work as long as the VARS have been initialized before saving. BTW, what value do you get when you PEEK 49151? I guess the T/S1000 and ZX81 aren't 100% compatible! ...
by GCHarder
Tue Oct 15, 2019 10:40 pm
Forum: Software
Topic: ZXPand Organizer
Replies: 17
Views: 1356

Re: ZXPand Organizer

As noted elsewhere, the videos I posted where created on a REAL, repeat, REAL TS/1000 with ZXPand+ interface. I've not come across the problem so I didn't know there was one. Adding a POKE 49151,0 to the start-up would negate the reason its there. It's there so that if say you pick item 46 from a lo...
by GCHarder
Tue Oct 15, 2019 3:37 am
Forum: Software
Topic: ZXPand Organizer
Replies: 17
Views: 1356

Re: ZXPand Organizer

The program uses memory location 49151 to keep track of the last item selected from the list. It checks this location on start up and moves the pointer to that item in the list. For some reason your system at start up has a high value stored there so your getting a subscript out of range error. I'll...
by GCHarder
Sat Oct 05, 2019 8:03 pm
Forum: Software
Topic: ZXPand Organizer
Replies: 17
Views: 1356

Re: ZXPand Organizer

More sample projects...

HogRogProg collection

viewtopic.php?f=4&t=2867&p=30734&hilit= ... rog#p30734

Benhams Tops/Disks

viewtopic.php?f=11&t=1705&p=17620&hilit=benham#p17620

Regards;

Greg