SULTAN'S TOWER
by Remko Blakenburgh, Leiden, Holland
from Your Computer, July 1985
Sultan (YC).p is the original, as published program, for standard ZX81.
Sultan.tzx is the Chroma version which works as a CHR$128 program as well.
There's also a nice cassette cover included, I don't remember where I got this from or who did it.
Now go and save Fatima!!!
Enjoy;
Greg
Sultan's Tower CHR$128 & Chroma versions
Sultan's Tower CHR$128 & Chroma versions
- Attachments
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- Sultan's Tower.zip
- Program
- (190.86 KiB) Downloaded 126 times
Re: Sultan's Tower CHR$128 & Chroma versions
It's a hardware extension, for UDG (User Defined Graphics). Here every char can be changed. The CHR$128 version of UDG makes it possible to have 128 different chars. Here normal and inverse chars can be different.
It requires special hardware like Chroma 81 interface or UDG4ZXpand. Both of these hardware extensions for the ZX81 is hard to come by, as UDG4ZXpand is not made any longer, and Chroma 81 is made is small quantities, and in high demand.
It requires special hardware like Chroma 81 interface or UDG4ZXpand. Both of these hardware extensions for the ZX81 is hard to come by, as UDG4ZXpand is not made any longer, and Chroma 81 is made is small quantities, and in high demand.
Re: Sultan's Tower CHR$128 & Chroma versions
Ah, thanks! I haven't tried using the UDG yet. Still researching how to do that.
I was aware fo Chroma81, figured out how to use it on a couple of my programs. Sadly, can't find actual hardware as you noted.
I was aware fo Chroma81, figured out how to use it on a couple of my programs. Sadly, can't find actual hardware as you noted.
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Re: Sultan's Tower CHR$128 & Chroma versions
ZX81 Variations
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
ZX81 Chip Pin-outs
ZX81 Video Transistor Buffer Amp
Standby alert
There are four lights!
Step up to red alert. Sir, are you absolutely sure? It does mean changing the bulb
Looking forward to summer later in the year.
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- Posts: 169
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