is there an updated zx81 rom?
is there an updated zx81 rom?
so one that has a better user interface?
- 1024MAK
- Posts: 5118
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Re: is there an updated zx81 rom?
There were only two official versions (the first one “standard” having a bug, replaced with the “improved” ROM).
There have been a number of third party replacements that do things differently, often just further bug fixes.
This site has some...
Mark
There have been a number of third party replacements that do things differently, often just further bug fixes.
This site has some...
Mark
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.
Re: is there an updated zx81 rom?
i noticed the zx97 rom in there, will this work with an emulator?
- 1024MAK
- Posts: 5118
- Joined: Mon Sep 26, 2011 10:56 am
- Location: Looking forward to summer in Somerset, UK...
Re: is there an updated zx81 rom?
Only with emulators that were designed to work with it. The ZX81 normal ROMs are 8K bytes in size, the ZX97 ROM is much larger.
Mark
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.
Re: is there an updated zx81 rom?
There is also the ZX81x2 ROM which runs BASIC considerably faster and having programmed my own EPROM with this image can attest to its speed improvement.
Details here.
https://www.sinclairzxworld.com/viewtop ... lit=zx81x2
Details here.
https://www.sinclairzxworld.com/viewtop ... lit=zx81x2
Re: is there an updated zx81 rom?
Hi,
Where is the question?
In the tread or in the header?
Yes, the new ZX81 ROM, the debugged one.
And Yes, Coral Basic...
Where is the question?
In the tread or in the header?
Yes, the new ZX81 ROM, the debugged one.
And Yes, Coral Basic...
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: is there an updated zx81 rom?
In my knowledge Coral Basic is not a new ROM, but an extension to Basic running from regular RAM.
So the Basic extensions (loaded and runned from RAM), that I know are:
So the Basic extensions (loaded and runned from RAM), that I know are:
- Coral Basic
- PowerBasic
- HRG-ms (PowerBasic with Hires Graphics)
Re: is there an updated zx81 rom?
Is there a Forth ROM (or other language) that will work on the ZX81 Minstrel Clone by any chance (or real ZX81)?
Regards,
Shaun.
Regards,
Shaun.
Re: is there an updated zx81 rom?
Yes, may be the TreeForth ROM.
Xavier ...on the Facebook groupe : "Zx81 France"(fr)
Re: is there an updated zx81 rom?
How can I tell which ROM I have without opening up the machine?
Also, is there a drop in EPROM I can program to replace the ROM with a variant or there is a need for some form of EPROM adapter?
Also, is there a drop in EPROM I can program to replace the ROM with a variant or there is a need for some form of EPROM adapter?