Re: [Ql-Users] QL-SD What is it?

2013-12-11 Thread Dave Park
It's a good part - $2.26 each at digikey... On Tue, Dec 10, 2013 at 6:35 AM, Miguel Angel Rodríguez Jódar miguel.an...@zxprojects.com wrote: It looks like you used a vintage PLD, which was a good idea. Not so vintage, actually. It's a XC9572XL CPLD from Xilinx, still in production,

Re: [Ql-Users] QL-SD What is it?

2013-12-10 Thread Miguel Angel Rodríguez Jódar
It looks like you used a vintage PLD, which was a good idea. Not so vintage, actually. It's a XC9572XL CPLD from Xilinx, still in production, afaik. It's only that for this prototype, I've used the PLCC44 version, with PLCC44 socket. Production boards may have the VQ64, or TQ100 version

Re: [Ql-Users] QL-SD What is it?

2013-12-10 Thread Michael Bulford
On Thursday, 5 December 2013, Colin Mckay Wrote: Please describe the hardware software which forms it, sufficiently for us to know what you are talking about. On Wednesday, 04 December 2013, Peter pg...@q40.de Wrote: the restriction that a QL memory expansion is madatory for QL-SD has

Re: [Ql-Users] QL-SD What is it?

2013-12-10 Thread Tobias Fröschle
Michael, Nothing to do with software, not much to do with hardware as well, just the basic needs of a computer /Any/ QL (or any other computer) needs memory to store the buffers for the mass storage, in the QL's case there is the added problem that the OS is designed in a way (like a lot

Re: [Ql-Users] QL-SD What is it?

2013-12-09 Thread Miguel Angel Rodriguez Jodar
I have no idea about the zxprojects device on youtube. It's a device that is plugged into the expansion ROM connector. It offers a SD inteface and a 16K ROM with firmware. It is able to perform fast reads by using MOVE.L instruction that can read 4 bytes from the SD card in one instruction.

[Ql-Users] QL-SD What is it?

2013-12-05 Thread Colin Mckay
Please describe the hardware software which forms it, sufficiently for us to know what you are talking about. Colin McKay ___ QL-Users Mailing List http://www.q-v-d.demon.co.uk/smsqe.htm