| 摘要 |
<p>A CMOS microprocessor having a plurality of registers wherein the registers contain RAM type storage cells resulting in compact, fully static register. In most cases the registers are connected to two buses. A 5 bit temporary register (34) and an 8 bit program counter (23) are each connected to three buses. An incrementer (21), (38) can provide an increment or decrement function but cannot be used to store functions. A bit code generator (44) is connected to a data bus (12) thereby allowing any one selected data bit carried by the data bus to be modified. A 5 bit high order program counter (33) is capable of directly transferring its contents to the 5 bit temporary register (34). An 8 bit low order incrementer (21) is capable of incrementing three different registers which are an address storage register (22), a program counter (23), and a stack pointer (24). A 5 bit high order incrementer (38) is also capable of incrementing three registers which are an address storage register (32), a program counter (33), and a temporary register (34). An ALU (11) has a first and a second input, which, because of the bus structure used, can both receive data simultaneously. </p> |
