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Get monitor keypad working

This commit is contained in:
n loewen 2025-03-25 15:22:25 +00:00
parent e82a429d5e
commit cf68271440
1 changed files with 39 additions and 13 deletions
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52
src/pi-pico/cpu-pi-pico.py
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@ -24,13 +24,20 @@ class TwoDigitHexInput:
def input(self, d):
self.digits[self.currentDigit] = d
self.value = (self.digits[0] * 16) + self.digits[1]
print("INPUT", self.digits)
print("INPUT", self.digits, "current digit: " + str(self.currentDigit), "value: " + str(self.value))
self.currentDigit = 0 if self.currentDigit else 1
def clear(self):
self.__init__()
print(self.digits)
def set(self, n):
self.value = n
self.digits[0] = n >> 4
self.digits[1] = n & 0xF
class CPU:
def __init__(self):
@ -204,8 +211,8 @@ keymatrix = keypad.KeyMatrix(
keymap = {
15:"0", 16:"1", 17:"2", 18:"3", 19:"runhalt",
10:"4", 11:"5", 12:"6", 13:"7", 14:"step",
5:"8", 6:"9", 7:"A", 8:"B", 9:"addrdata",
0:"C", 1:"D", 2:"E", 3:"F", 4:"NA" }
5:"8", 6:"9", 7:"A", 8:"B", 9:"addr",
0:"C", 1:"D", 2:"E", 3:"F", 4:"data" }
numericKeys = [ "0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F" ]
@ -219,12 +226,18 @@ class Monitor:
self.monitorAddressInput = TwoDigitHexInput()
self.monitorDataInput = TwoDigitHexInput()
# In data entry mode, when a full byte is keyed in,
# the next keypress advances to the next address and continues entering data there.
# This variable tracks whether it's time to do that or not.
self.advanceDataEntryNextPress = False
def handleKeys(self):
keypad_event = keymatrix.events.get()
keyPressed = True if (keypad_event and keypad_event.released ) else False
key = keymap[keypad_event.key_number] if keyPressed else False
numericKeyPressed = True if (keyPressed and (key in numericKeys)) else False
if self.cpu.running:
if key == "runhalt":
print("HALT PRESSED")
@ -241,12 +254,17 @@ class Monitor:
print("\nSTARTING")
time.sleep(0.5) # lazy debounce
if key == "addrdata":
self.monitorMode = 'addressEntry' if self.monitorMode != 'addressEntry' else 'dataEntry'
if key == "addr":
self.monitorMode = 'addressEntry'
print("\nENTERING", self.monitorMode, "MODE")
self.monitorDataInput.currentDigit = 0
self.monitorAddressInput.currentDigit = 0
time.sleep(0.5) # lazy debounce
if key == "data":
self.monitorMode = 'dataEntry'
print("\nENTERING", self.monitorMode, "MODE")
self.monitorDataInput.clear()
self.advanceDataEntryNextPress = False
time.sleep(0.5) # lazy debounce
if key == "step":
print("\nSINGLE STEP FROM MONITOR ADDR")
@ -260,24 +278,32 @@ class Monitor:
self.cpu.IP = self.monitorAddressInput.value
print("MA", self.cpu.IP)
else:
if self.monitorMode == 'dataEntry':
if self.advanceDataEntryNextPress:
print("ADVANCING")
self.cpu.IP = (self.cpu.IP + 1) % 256
# self.monitorDataInput.clear() # reset .currentDigit
self.monitorDataInput.set(self.cpu.memory[self.cpu.IP])
self.advanceDataEntryNextPress = False
self.monitorDataInput.input(int(key, 16))
self.cpu.memory[self.cpu.IP] = self.monitorDataInput.value
print("MD", self.monitorDataInput.value)
if self.monitorDataInput.currentDigit == 0: # that was the second keypress, so go to the next addresss
self.cpu.IP = (self.cpu.IP + 1) % 256
print("ADVANCING")
if self.monitorDataInput.currentDigit == 0: # that was the second keypress, so next keypress is for the next address
self.advanceDataEntryNextPress = True
print("Acc", self.cpu.acc, "IP", self.cpu.IP, "Data", self.cpu.memory[self.cpu.IP], "\n")
def run(self):
self.cpu.start()
#self.cpu.start()
t = time.time()
while (time.time() - t) < 120:
self.handleKeys()
display_1.print(toHex(self.monitorAddressInput.value) + toHex(self.monitorDataInput.value))
display_2.print(toHex(self.cpu.IP) + toHex(self.cpu.acc))
display_1.print(toHex(self.cpu.IP) + toHex(self.cpu.memory[self.cpu.IP]))
# display_1.print(toHex(self.monitorAddressInput.value) + toHex(self.cpu.memory[self.cpu.IP]))
# display_2.print(toHex(self.cpu.IP) + toHex(self.cpu.acc))
display_2.print(toHex(self.cpu.acc))
if self.cpu.running:
self.cpu.step()
time.sleep(0.5)