Search found 524 matches

by hlide
Mon Dec 28, 2020 11:09 am
Forum: Hardware
Topic: MZ-1E14 replica
Replies: 11
Views: 1788

Re: MZ-1E14 replica

The only interest was for our MZ-700 to be able to get the complete QD management. But, yeah, that replica won't fit because it would need a different address decoder and a 2732 instead (that's what my last post was saying a "BUT"). MZ-1500 has already the complete QD management in its ori...
by hlide
Sun Dec 27, 2020 4:35 pm
Forum: Hardware
Topic: MZ-1E14 replica
Replies: 11
Views: 1788

Re: MZ-1E14 replica

But it looks as if those ROMs having a complete set of QD commands have an address range of $E800-$FFFF instead of $E800-$EFFF. And I would even consider they could have code between $E010-$FFFF in fact (not necessarily only for QD).
by hlide
Sun Dec 27, 2020 4:18 pm
Forum: Hardware
Topic: MZ-1E14 replica
Replies: 11
Views: 1788

Re: MZ-1E14 replica

by hlide
Sun Dec 27, 2020 10:55 am
Forum: Hardware
Topic: MZ-1E14 replica
Replies: 11
Views: 1788

Re: MZ-1E14 replica

I know three interfaces: MZ-1E14 (MZ-700), MZ-1E18 (MZ-2000/200), MZ-1E19 (MZ-800) and MZ-1500 has already a QD ROM. I wonder if the QD part for MZ-1500 can be used since MZ-1500 is more or less an extended MZ-700. I know MZ-700 QD ROM is more limited than MZ-800's. MZ-1E19 ROM commands: - QF-Format...
by hlide
Sat Dec 26, 2020 7:06 pm
Forum: Hardware
Topic: Still faulty 80K
Replies: 27
Views: 12463

Re: Still faulty 80K

You must run the RAMTEST after each chip replacement until there is no more halt with the hexadecimal faulty pattern and address. Once running, say, a minute, without halting, it means there is no faulty chip found. Then you can try again your BASIC.
by hlide
Sat Dec 26, 2020 6:57 pm
Forum: Hardware
Topic: MZ-1E14 replica
Replies: 11
Views: 1788

Re: MZ-1E14 replica

Really cool! Could it be possible to use the MZ-1500 QD code as I believe it is more complete and can write programs in QD unlike the MZ-700 interface?
by hlide
Tue Dec 22, 2020 11:37 pm
Forum: Other
Topic: [MZ-80K/A, MZ-700] MZRAMTEST
Replies: 1
Views: 3531

Re: [MZ-80K/A, MZ-700] MZRAMTEST

MZ80KDRAM.jpg
by hlide
Tue Dec 22, 2020 11:26 pm
Forum: Hardware
Topic: Still faulty 80K
Replies: 27
Views: 12463

Re: Still faulty 80K

From : https://forum.sharpmz.org/viewtopic.php?f=17&t=171 When an issue occurs, it displays in the middle of the display three numbers in hexadecimal: the first [byte in hexadecimal] is the pattern byte tested (bits are inverted), the second [byte in hexadecimal] is the read byte not matching th...
by hlide
Sat Dec 19, 2020 5:00 pm
Forum: Collecting
Topic: My SHARP MZ/X1/X68K collection
Replies: 0
Views: 839

My SHARP MZ/X1/X68K collection

SHARP MZ series K : - 1 x MZ-80 K: functional. - 1 x MZ-80 A: needs repairs. - 1 x MZ-711 (PAL): functional. - 2 x MZ-721 (PAL): both functional but one has a defective MZ-1T01. - 1 x MZ-721 (PAL): needs repairs. - 1 x MZ-731 (NTSC): untested. - 2 x MZ-821: both functional. - 1 x MZ-821 + MZ-1F11: ...
by hlide
Thu Dec 17, 2020 6:34 pm
Forum: Buy/sell
Topic: SOLD: partially functioning MZ-821
Replies: 5
Views: 895

Re: SOLD: partially functioning MZ-821

Thanks geekabit.