Search found 168 matches

by mz-80a
Tue Feb 06, 2018 8:38 am
Forum: Hardware
Topic: MZ-1200 Character ROM ?
Replies: 10
Views: 3249

Re: MZ-1200 Character ROM ?

Looks like the MZ-80K (Japanese version of this machine) contains similar, probably the same, CG-ROM so I will be trying that...
by mz-80a
Mon Feb 05, 2018 8:41 pm
Forum: Games
Topic: Star Avenger
Replies: 7
Views: 2687

Re: Star Avenger

Yeah.......... that doesn't work at all ! Worth a try though.
by mz-80a
Mon Feb 05, 2018 7:22 pm
Forum: Hardware
Topic: MZ-1200 Character ROM ?
Replies: 10
Views: 3249

MZ-1200 Character ROM ?

Does anyone have a copy of the MZ-1200 character ROM? I would like to change the one in my MZ-80A for the 1200 so I can play some Japanese games. I also have the ability to make new Monitor ROMs and character ROMs for the 80A. In fact, if anyone has the 1200 Monitor ROM as well that'd be pretty cool...
by mz-80a
Mon Feb 05, 2018 7:18 pm
Forum: Off-topic
Topic: Introduction
Replies: 16
Views: 3989

Re: Introduction

Welcome to the forum! Not a bad idea having an introduction topic. - male - 1974 also! - southwest uk My MZ-80A was my 2nd computer (after the ZX-81). I was pretty young when it came out so didn't make a whole load of games myself. I used to type out all the BASIC programs in the manual and loved pl...
by mz-80a
Mon Feb 05, 2018 7:05 pm
Forum: Games
Topic: Star Avenger
Replies: 7
Views: 2687

Re: Star Avenger

Oh sorry, don't know how I missed that attachment!! I'll check it but usually the 80A just 'ignores' the colour memory reads/writes and the rest of the game could work. It worked okay with Send-1 and Land Escape although the games run a little slower as it's a 2Mhz CPU on the 80A as opposed to the 3...
by mz-80a
Mon Feb 05, 2018 9:10 am
Forum: Games
Topic: Star Avenger
Replies: 7
Views: 2687

Re: Star Avenger

That looks excellent! Do you think it'd run on the 80A? (And do you have an MZF ? ;) )
by mz-80a
Sun Feb 04, 2018 5:40 pm
Forum: Assembly
Topic: LFSR
Replies: 1
Views: 955

Re: LFSR

Yep, it's simply a case of loading the symbol #LFSR with a 16-bit value to start off the number generation process
by mz-80a
Sun Feb 04, 2018 5:38 pm
Forum: Games
Topic: Gaming
Replies: 4
Views: 1558

Re: Gaming

That was the 80K. There may even have been a mod to fix that for 80Ks. The 80A had no such problem ;)
by mz-80a
Sun Feb 04, 2018 9:29 am
Forum: Assembly
Topic: LFSR
Replies: 1
Views: 955

LFSR

Hi, I wanted to generate 1000 numbers in a random non-repeating order (ranged between 1 to 1000) and have been given this code which is a linear feedback shift register: LD IX,#LFSR ; (2-byte store) SRL (IX+00) RR (IX+01) RET NC LD A,(IX+00) XOR #0x02 LD (IX+00),A LD A,(IX+01) XOR #0x40 LD (IX+01),A...
by mz-80a
Sun Feb 04, 2018 9:21 am
Forum: Games
Topic: Gaming
Replies: 4
Views: 1558

Re: Gaming

That is true! But I like the better / faster screen updates of machine code games. You only have to look at Lunar Lander on the 80K / 80A..... quite laborious waiting for that rocket to scroll across the screen !! :)