Sharp MZ

Looks like a game running on modern hardware, but with 700-inspired sound and graphics.

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?

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...

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...

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...

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.

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)...

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.

Only 0xffff.

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...