Search found 162 matches

by olofsen
Wed Jul 17, 2019 8:02 am
Forum: Software
Topic: Happy pi day - March 14th
Replies: 4
Views: 564

Re: Happy pi day - March 14th

Changing line 220 in pi2.p to the one in pi.p seems to help - so

Code: Select all

220 LET S=-1
by olofsen
Sat Jun 22, 2019 3:44 pm
Forum: Emulators
Topic: sz81 emulator
Replies: 10
Views: 920

Re: sz81 emulator

GCHarder wrote:
Wed Jun 12, 2019 10:09 pm
Is there a manual somewhere for ZX81NU?
I'm not sure if there is a manual; the project is described here:
http://forum.tlienhard.com/phpBB3/viewt ... f=2&t=1029
by olofsen
Sat Jun 22, 2019 3:40 pm
Forum: Emulators
Topic: sz81 emulator
Replies: 10
Views: 920

Re: sz81 emulator

It seems the macOS download only includes the standard version. Could you kindly include the ZXpand and ZXmore version with the macOS package as well? Unfortunately I'm not familiar with macOS Apps and Frameworks, but the following steps might help to create an executable that may be started from a...
by olofsen
Thu Jun 13, 2019 11:16 pm
Forum: Emulators
Topic: sz81 emulator
Replies: 10
Views: 920

Re: sz81 emulator

by olofsen
Sat Apr 27, 2019 4:57 pm
Forum: Emulators
Topic: bugs found on eo
Replies: 14
Views: 2634

Re: bugs found on eo

Per design, the Z condition bit is not affected by ADD HL,BC...
by olofsen
Sat Apr 27, 2019 3:15 pm
Forum: Development
Topic: Using sll with z80asm Version 1.8
Replies: 4
Views: 595

Re: Using sll with z80asm Version 1.8

Apparently z80asm doesn't know this undocumented instruction... For example zasm and sjasm do handle it:

https://k1.spdns.de/Develop/Projects/zasm/
http://www.xl2s.tk/
by olofsen
Sun Nov 11, 2018 7:31 pm
Forum: ZX BASIC
Topic: SPeccy ON the ZeddY
Replies: 100
Views: 28085

Re: SPeccy ON the ZeddY

The attachment on the previous page with ZTOS.P is updated to do the startup as described in the previous post, and I think it is indeed solved :)
by olofsen
Sat Nov 03, 2018 9:58 am
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 4822

Re: Possible bug in ZX81x2 ROM ?

On my ZXmore with ZXmaster 1.7 (but both when switched on and off), and an early CPLD, I do get the inverted screen. Without line 400, it is not inverted. The RAND indeed modifies the dummy display file according to the manual on page 12.
by olofsen
Thu Oct 25, 2018 11:59 pm
Forum: ZX BASIC
Topic: Possible bug in ZX81x2 ROM ?
Replies: 36
Views: 4822

Re: Possible bug in ZX81x2 ROM ?

Does the attached demo run ok? I changed a few calls to the ROM...

Code: Select all

	defpage 0,16393
	page 0
	incbin HRDEMO30.P

	code !	48f5h
	call	1be9h

	code !	4a40h
	call	nz,1b8dh
	
	code !	4b80h
	call	19fdh
by olofsen
Tue Oct 16, 2018 8:00 am
Forum: ZX BASIC
Topic: SPeccy ON the ZeddY
Replies: 100
Views: 28085

Re: SPeccy ON the ZeddY

Yes, it is a special version (with a tiny patch for the tape loading) of the latest Sponzy I obtained from Zsolt.