ZX-MMC controller
ZXNet echo conference «hardware.zx»
Hello, All
ZX_MMC http://www.zxbada.bbk.org/zxmmc/
judging by the description it is a hardware SPI controller
for Spekov ports
Has anyone managed to download the schematic for this device?
Otherwise it gives me a black square instead of a picture or says - format
unrecognized
question to the cpld guru - if you do such a thing, what is the minimum
xilinx will it fit? or you can recompile
a program for example for an alter?
Hello, Mikka_A
Mik> 10$ approximately for the price....
It should be cheaper. See other speeds and frames. By the way, this stone
PLCC is there.
Hello, Mikka_A
Mik> it downloaded for me, but it doesn’t open...it’s not clear, by the way, why.
Format - JPEG old on TIFF.
I hope the author will not be offended, I converted it to PNG.
File: ZXMMC.zip http://zx.pk.ru/attachment.php?attachmentid=4096
Hello Orionsoft
Ori> ZX_MMC http://www.zxbada.bbk.org/zxmmc/
Ori>
Ori> judging by the description is a hardware SPI controller
Ori> for spec ports
Not just SPI;
┌─-; CODE ───
TXREG equ $0F ; RS232 transmitter register
RXREG equ $0F ; RS232 receiver register
KEMPSTON equ $1F
STATUS equ $2F ; SPI status register
NMIREG equ $2F ; ready register --> NMI Z80
SPI_PORT equ $3F ; SPI data port
OUT_PORT equ $1F ; CS control sampling port (D0)
└── CODE ───
Ori> has anyone managed to download the circuit diagram for this device?
Ori> otherwise it gives me a black square instead of a picture or says -
Ori> format not recognized.
Ori>
Ori> question to the cpld guru - if you do such a thing, then in which
Ori> minimal xilinx will it fit? or you can recompile
Ori> a program for example for an alter?
Everything downloaded for me without any problems.
The device is made on CPLD Xilinx XC9572XL-VQ44 (72 macrocells).
You can remake it for Alter, but what’s the point, because the author laid out everything
what is needed to replicate the device down to the source firmware and tracingprinted circuit board.
Hello icebear
ice> It should be cheaper. See other speeds and frames. This stone
ice> by the way, it is also in PLCC.
10 nsec is used. crystal.
According to efind.ru the price ranges from 3 to 12 $
Hello caro
car> Everything downloaded for me without problems.
car>
I downloaded it, but it doesn’t open... it’s not clear why, by the way.
Kamil - can you throw me a pattern with soap?
car> The device is made on CPLD Xilinx XC9572XL-VQ44 (72 macrocells).
car>
and how is it made (from the public domain)?
PS. I looked around the shops - there is pliska in only one shop in St. Petersburg, and even then under
order.
10$ is about the price....
Hello caro
The question is ripe partly on the subject - can anyone say what kind of miracle it is?
capabilities of spec +3 uses ResiDOS which was tailored only for it???
And how much different is the Vasik +3 from the Vasik 128 (according to the firmware code)???