darkblu and Vysez,
thanks for the info. I'm going to dig my old DC out, grab a coders cable and get cracking sometime next month when things quieten down a bit. I sure the learning curve will be lovely and steep!
BBAs are stupidly expensive on ebay, and the only people selling them say they'll ship to the US only. Might look into making a USB cable if I get into this and it's not just a passing curiosity!
Crazyace said:
So SH4+Elan+2xCLX+VRAM is less than EE+GS? Parts per wafer isn't the final say on costs - packaging and pcb costs are also involved, especially in high volume.
I think looking to Naomi 2 as a design for a DC launched in 2000 is a pretty bad idea (not directing this particularly at you, just this is the most suitable point to bring this up!). As I think I've said before in one of these threads, if Sega were building the DC for a 2000 release they've *wouldn't* be using parts that only exist because they were designed for the 1998 DC/Naomi combo (Naomi 2 was designed to utilize, as far as possible, parts and memory that were already being mass produced and mass purchased for the DC).
For a clean slate in 2000 (as we're comparing N2 against GS+EE) you wouldn't pick a 100 mHz clx and a single 200mhz SH4. This technology is only good as an indicator of what would have been available.
Crazyace said:
I think the CPU is the real millstone around the DC's neck
This is certainly supported by the little you can read on the internet about overclocked DCs! A modest overclock of the CPU to 240mHz is reported to remove the slowdown from games such as Shenmue and ... can't remember off the top of my head, sorry!
I know Sega got burned by the Saturn, and were looking to keep DC costs down for a low launch price, but I always though that a second CPU (perhaps another SH4, perhaps something else) and the Naomi's memory configuration (maybe without al the audio ram) would have given the DC better legs to compete against the PS2 and made arcade conversion more impressive and easier. As it turns out, the modem was an expensive addition to a cheap system with questionable sales benefits. They could have saved some cost by ripping that out for a start ...