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Dragon 32 - IC17 / IC18
Posted: Wed Aug 28, 2013 3:56 pm
by KenH
On the Dragon 32 the 16k rom is split into two roms: IC17 & IC18.
On my Dragon, IC17 is socketed while IC18 is soldered. Is this the standard configuration?
Which IC stores the lower 8K of rom and which one has the upper 8k?
Re: Dragon 32 - IC17 / IC18
Posted: Wed Aug 28, 2013 4:13 pm
by robcfg
If you checkl the pictures of Dragon 32 boards
here, you'll see that IC18 are usually labelled as 1-0 and IC17 as 1-1, so I guess IC18 has the lower part, and IC17 the upper one.
Please, correct me anyone if I'm wrong.
Re: Dragon 32 - IC17 / IC18
Posted: Thu Aug 29, 2013 12:27 am
by zephyr
KenH wrote:On the Dragon 32 the 16k rom is split into two roms: IC17 & IC18.
On my Dragon, IC17 is socketed while IC18 is soldered. Is this the standard configuration?
Some boards come with both ICs socketed. Others with both soldered.
Re: Dragon 32 - IC17 / IC18
Posted: Thu Aug 29, 2013 5:11 am
by KenH
Thanks Steve.
Do you know which IC stores the lower 8K of rom and which one has the upper 8k?
Re: Dragon 32 - IC17 / IC18
Posted: Thu Aug 29, 2013 8:41 am
by zephyr
KenH wrote:Do you know which IC stores the lower 8K of rom and which one has the upper 8k?
No.
Re: Dragon 32 - IC17 / IC18
Posted: Thu Aug 29, 2013 7:33 pm
by rolfmichelsen
A quick inspection of the schematics for a Dragon 32 seems to indicate that IC18 is the lower 8k of the ROM.
-- Rolf