Just wondering.
Why didn't they use a battery and a small amount of SRAM instead?Because PROMs are expensive. https://www.google.com/url?sa=t&sour...iBDzsgR7ukt3Cw This is average EPROM pricing which isn't the same but is an indicator for PROMs. You can see, if PROMs are half the price of EPROMs, that in 1994 raw component memory price made up half the retail cost of that cartridge. It's hard to imagine in today's market, non-rotating memory was expensive.
Because PROMs are expensive.
It's hard to imagine in today's market, non-rotating memory was expensive.