Good Morning Everyone.
I´ve tried to upgrade my FS-A1ST memory to 1 Mb using JIPE/HANSO circuit located at http://msx.retro8bits.com/msxdocs/msxturbor1mb.pdf
I´m using 2 memory ICs type TMS44400, with 60 ns access time, extracted from a SIMM-30.
The problem is that, after the upgrade, the MSX won´t boot anymore.
I´ve double-checked the circuit and pinouts, and everything is exactly accordinly to JIPE instructions.
Does anyone have an ideia of would could it be?
Thanks in advance;
Fernando - Brazil
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