Three registers will not fit in a single card11/04/2009
Registers have gone too big, specially with the addition of logic for detecting Conditional Status. A typical register such as B, takes 14 chips plus additional logic so the three registers per card that I've planned would take more than 42 chips which definitely don't fit in a 8x5.5 inches prototyping card.
I have two options: (1) To use larger prototyping boards, (2) to distribute registers in a different way (2 regs per board at the most). The former is too expensive; the right card costs almost twice (about $20.00 from Digi-Key) that my 8x5.5 inches boards. Hence I'll take the second choice.
Here is the new distribution:
Card Name Registers
- - - - - - - - - - - - - - - - - - -
H1-REG1-1 PC, OR
H1-REG2-1 SP
H1-REG3-1 B, C
H1-REG4-1 D, E
H1-ALU-1 A (and the ALU)
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Project start date: May 13 of 2009
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