User Tools

Site Tools


telephony:td816bx_hardware

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
telephony:td816bx_hardware [2026/04/01 12:03] prppedrotelephony:td816bx_hardware [2026/04/01 17:57] (current) prppedro
Line 7: Line 7:
 This system got no more than a few hundred KB's of RAM. System configuration is stored on a EEPROM (I mean... is it? Couldn't confirm). The CPU is a m68k chip (yeah, same as Macintosh computers and several embedded devices of the era). This unity got the TMP68301AF-12 variant of that chip, manufactured by Toshiba.  This system got no more than a few hundred KB's of RAM. System configuration is stored on a EEPROM (I mean... is it? Couldn't confirm). The CPU is a m68k chip (yeah, same as Macintosh computers and several embedded devices of the era). This unity got the TMP68301AF-12 variant of that chip, manufactured by Toshiba. 
  
-The ROM complex is detachable, for reasons I deem unclear, since those chips are already seated on sockets. See below for more information on that detachable board. +The ROM complex is detachable, for reasons I deem not completely clear, since those chips are already seated on sockets. See below for more information on that detachable board.  
 ## ROM version ## ROM version
  
Line 92: Line 93:
  
 This makes the system kind of an hybrid between -1 and -2, hardware-wise. The CPU smells like 12 MHz, judging by it's model suffix (the datasheet for it mentions 8~16 MHz sub-models), but the amount of RAM is very far behind even other models of -1 (cf. «ROM mysteries» above.)  This makes the system kind of an hybrid between -1 and -2, hardware-wise. The CPU smells like 12 MHz, judging by it's model suffix (the datasheet for it mentions 8~16 MHz sub-models), but the amount of RAM is very far behind even other models of -1 (cf. «ROM mysteries» above.) 
 +
 +Anyhow, [like I've posted on Sundance Communications](https://sundance-communications.com/forum/ubbthreads.php/topics/647458/toner), the oscillator seems to be doing 8 MHz, so I don't know if the CPU is really operating at 12 MHz. 
telephony/td816bx_hardware.txt · Last modified: by prppedro