Search found 124 matches

by Jo Even
Tue Dec 03, 2019 8:18 pm
Forum: Games
Topic: Is it real game ?
Replies: 4
Views: 77

Re: Is it real game ?

Looks like a game running on modern hardware, but with 700-inspired sound and graphics.
by Jo Even
Sun Nov 24, 2019 5:16 pm
Forum: Games
Topic: Sharptris - new game for MZ700
Replies: 5
Views: 258

Re: Sharptris - new game for MZ700

I consider selling some copies on tape to finance this year's domain and server rent for sharpmz.org. Is there any interest in such a thing?
by Jo Even
Sat Nov 23, 2019 6:16 pm
Forum: Hardware
Topic: MZ 700 - rear view
Replies: 11
Views: 331

Re: MZ 700 - rear view

The use of female or male connectors was up to the implementation in those days. The only computer I know that use a male DB25 printer port and female DB25 serial port is the Amiga 1000, and even back in 1985 it was criticized for not having standard ports. So if you see a female DB25 on the back o...
by Jo Even
Sat Nov 23, 2019 6:02 pm
Forum: Games
Topic: Sharptris - new game for MZ700
Replies: 5
Views: 258

Sharptris - new game for MZ700

Sharptris is an implementation of Tetris for the MZ700. It has one- and twoplayer modes and is mostly based on the original game, but also has a couple of (optional) features from more recent Tetris versions. The game is coded in C using z88dk. Graphics and code by me, graphics editor and sound by g...
by Jo Even
Thu Nov 07, 2019 8:48 pm
Forum: Other
Topic: MZ 700 - detect PAL/NTSC
Replies: 13
Views: 638

Re: MZ 700 - detect PAL/NTSC

I guess you wrap it with DI : ... : EI to delete any interrupt? No, I did not. Tried this now but it did not make a difference. Emulator: I'm not expecting the emulator to run each instruction at an accurate 3.57 MHz frequency. An emulator tends to run a batch of instructions then pause to make the...
by Jo Even
Wed Nov 06, 2019 10:00 pm
Forum: Other
Topic: MZ 700 - detect PAL/NTSC
Replies: 13
Views: 638

Re: MZ 700 - detect PAL/NTSC

Btw I "solved" this problem by not using this timer at all, I count how many times I can increment a variable between two VBL's. Not the most elegant solution but it's working.
by Jo Even
Wed Nov 06, 2019 9:32 pm
Forum: Other
Topic: MZ 700 - detect PAL/NTSC
Replies: 13
Views: 638

Re: MZ 700 - detect PAL/NTSC

I'll try to remember that :) Did some more test and got things "working" on real hardware. "Working" as in "something happens". I don't understand the results. The crude test code looks like this: vbl(); *((unsigned char *)0xe007) = 0x74; *((unsigned char *)0xe005) = 0x00; *((unsigned char *)0xe005)...
by Jo Even
Tue Nov 05, 2019 1:18 pm
Forum: Hardware
Topic: Dumping character ROM
Replies: 11
Views: 688

Re: Dumping character ROM

UncleBod wrote:
Fri Oct 25, 2019 6:27 am
I am more interested in the label on the prom.
The swedish character ROM is an EPROM with a blank sticker over the window.
by Jo Even
Tue Nov 05, 2019 11:42 am
Forum: Other
Topic: MZ 700 - detect PAL/NTSC
Replies: 13
Views: 638

Re: MZ 700 - detect PAL/NTSC

Only 0xffff.
by Jo Even
Mon Nov 04, 2019 9:26 pm
Forum: Other
Topic: MZ 700 - detect PAL/NTSC
Replies: 13
Views: 638

Re: MZ 700 - detect PAL/NTSC

Software: 8253.CLK1 = /BLNK. Between two fall-edge /VSYNC count how many /BLNK occurs (reading CNT1 before and after and compute delta for instance). It should give the number of lines which should reflect a PAL or NTSC number of lines. Just tested this, and while it worked fine (sort of) in the em...