Posted by: lamer
DRAM and Tuner Module questions. - 05/03/2002 12:22
1. If the FPM DRAM chip is replaced with a 64Mb, will the Firmware automatically utilize the additional space? Is the device x8 or x16?
2. Are the tuner modules (within the AM/FM tuner modules) 16 pin or 22 pin?
3. Is there a way to rid/change the MK2a of the RIO logo at boot time?
Posted by: tfabris
Re: DRAM and Tuner Module questions. - 05/03/2002 12:25
Questions 1 and 3 are answered in the FAQ at
www.riocar.org , so please give that a read.
Question 2 is moot, because there's no way you could build your own tuner module. This probably should be a FAQ entry, too.
Posted by: jane
Re: DRAM and Tuner Module questions. - 05/03/2002 13:01
It is possible to make your own tuner... it is not really "difficult", but it would take a lot of time and be rather expensve and probably require several attempts.
Marius (Escort Cab + Mark II)
Posted by: andy
Re: DRAM and Tuner Module questions. - 05/03/2002 13:27
it would take a lot of time and be rather expensve and probably require several attempts
Sounds like a fairly good description of "difficult" to me...
Posted by: eternalsun
Re: DRAM and Tuner Module questions. - 05/03/2002 13:33
Tony didn't say difficult, he said there was "no way."
Calvin
Posted by: jane
Re: DRAM and Tuner Module questions. - 05/03/2002 13:35
Hehe. It is quite a long way away from "There is no way".
The input to to the tuner is a standard multiplexed stream. "Any" radio chip desgned for a RDS radio would do, and you would need something to control it, probably a PIC, talking RS-232 to the empeg and I2C or something to the radio chip, and then a handfull of "glue logic" and some consideration to RF and Audio parts (noise for instance).
Hugo had a short comment somewhere.
The easiest way... is to get a radio with line-out which is controllable through the serial port (or an external panel) and plug it to the AUX-in.
Marius (Escort Cab + Mark II)
Posted by: lamer
Re: DRAM and Tuner Module questions. - 05/03/2002 14:12
I found the 16Mb FPM DRAM in the spec, but I cannot find information on the device data bus width or attempting to upgrade it to 64Mb. Maybe I need my vision checked?
Posted by: altman
Re: DRAM and Tuner Module questions. - 05/03/2002 14:37
64MB FPM chips have more pins than 16MB fpm chips. Not an easy upgrade, and will generally require bootrom changes too.
Also, as has been pointed out, the player software won't recognise the extra memory.
Hugo
Posted by: ashmoore
Re: DRAM and Tuner Module questions. - 08/03/2002 22:00
obviously, the gap between "no way" and "difficult" is a little fuzzy.
Would several attempts at a design for a tuner, that may or may not blow up your now irreplaceable empeg be classed as "difficult" or "no way" or how about "not with my empeg you don't sunshine"?
That could be the empeg equivelant of a NIMBY (Not In My Back Yard) !?
Thought I should ask......