Jump to content


Member Since 23 Aug 2015
Online Last Active Oct 18 2017 11:31 PM

Posts I've Made

In Topic: JSW As Manufacturer (probably) intended .. kind of...

13 October 2017 - 08:22 AM

In the 'Watch Tower', I think the Water cells should perhaps be drawn with blue PAPER colour, to match the PAPER colour of the air cells (as well as the Fire cells, and the ramp and conveyor in that room).


As things stand, there is an unseemly black stripe underneath each Water cell, which jars against the background.


POKE #F2A9, #0E would fix it.  :)

In Topic: Useful Links

07 October 2017 - 12:14 PM

A good example of the use of a lookup table in a Patch Vector can be found in the first part of Geoff' Eddys patch for Room 11 ('Under Your Spell') in 'ZX Willy the Bug Slayer':


I later adapted Geoff's method for the PV in the 'Master Bedroom' in 'Jet Set Mini'.

In Topic: JSW As Manufacturer (probably) intended .. kind of...

06 October 2017 - 07:10 AM

Thanks Norman. That one reared its head during the development of a couple of projects we worked on.

I came up with a simple workaround by using AND #38 at #8AFC, which helped Daniel Gromann to fix the problem in the SE of his game 'Willy's New Mansion'. (My fix has the disadvantage that it stops the likes of the cross in First Landing from flashing whilst the game is paused.)

Then Richard Dymond (SkoolKid) came up with the same solution as you (AND/ADD/AND). I used that method in 'Jet Set Mini' (to fix a problem with the flashing letters on the Title Screen), and I think Mickey has fixed it in that way in his project here?

In Topic: Free space and code optimisation in "JSW"

04 October 2017 - 11:59 PM

Yes, you have to be very careful to 'follow the rules' when it comes to flags. I came a cropper a while back when I (falsely) assumed that a DEC A [or DEC L] command would set the Carry flag when A is decremented from #00 to #FF.

In Topic: Free space and code optimisation in "JSW"

04 October 2017 - 06:34 PM

Thanks for confirmation. I was going to test it out as is, just to see how it messes with some familiar layouts - I still might, just for fun...