11A34: Difference between revisions
Jump to navigation
Jump to search
No edit summary |
No edit summary |
||
| Line 55: | Line 55: | ||
Each of the attenuator modules drives an [[M377]] amplifier IC. | Each of the attenuator modules drives an [[M377]] amplifier IC. | ||
The [[11A32]] and 11A34 were originally intended to use Intel 8052 microcontrollers. | The [[11A32]] and 11A34 were originally intended to use [[Intel 8052]] microcontrollers. | ||
However, during development, the firmware swelled beyond that chip's 8192-byte maximum on-chip ROM size. | However, during development, the firmware swelled beyond that chip's 8192-byte maximum on-chip ROM size. | ||
[[Doug Haines]] found an alternate supplier of 8051-compatible chips (OKI Semiconductor) that offered a 16Kbyte on-chip ROM, | [[Doug Haines]] found an alternate supplier of 8051-compatible chips (OKI Semiconductor) that offered a 16Kbyte on-chip ROM, | ||