orao/orao.py

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#!/usr/bin/python2
# -*- coding: utf8 -*-
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import pygame, numpy, sys, datetime, wave, time
from orao.cpu import CPU
from orao.keyboard import listener as orao_kbd_listener
from orao.video import mem_listener as video_mem_listener, terminal
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from orao.timer import mem_listener as timer_mem_listener
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from orao.chargen import chargen_init, chargen_draw_str
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MEM_LOAD_PRG = None
if len(sys.argv) == 2:
MEM_LOAD_PRG = sys.argv[1]
# pygame init
ratio, running = 0, True
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pygame.mixer.pre_init(44100, 8, 1, buffer=2048)
pygame.init()
pygame.time.set_timer(pygame.USEREVENT + 1, 40)
# setup surfaces
screen = pygame.display.set_mode((512+1+8+8+1+1+32*3, 512+ 3*8 + 2))
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pygame.display.set_caption('Orao Emulator v0.1')
from orao.micro_mem_view import micro_mem_view, store_mem_view, micro_mem_view_dims
# create CPU
cpu = CPU(bytearray([0xFF]*0xC000) + bytearray(open('ORAO13.ROM', 'rb').read()))
cpu.channel = pygame.mixer.Channel(0)
cpu.store_mem_listeners.append(video_mem_listener)
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cpu.store_mem_listeners.append(timer_mem_listener)
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chargen_init(cpu.memory[0xE000:])
# status lines
status_line = pygame.Surface((64 * 8, 3*8), depth=24)
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status_line.fill((0, 0, 0))
chargen_draw_str(status_line, 0, 0, 'Orao Emulator v0.1')
if MEM_LOAD_PRG is not None:
chargen_draw_str(status_line, 0, 16, 'F8:', color=(0, 0, 0), bg=(0, 255, 0))
chargen_draw_str(status_line, 24, 16, ' %s' % MEM_LOAD_PRG)
# memory view labels
MAX_LABELS = 33
mem_map_labels = pygame.Surface((2*8+1, MAX_LABELS*8*2), depth=24)
mem_map_labels.fill((0, 0, 0))
for i in range(0, MAX_LABELS):
chargen_draw_str(mem_map_labels, 0, i*8*3, '%02x' % i, color=(0xff, 0xcc, 0x00))
mem_map_labels.set_at((16, i*8*3), (0, 255, 0))
def render_frame():
store_mem_view(cpu.memory)
screen.fill((0, 0, 0))
screen.blit(pygame.transform.smoothscale(terminal, (512, 512)), [0, 0])
chargen_draw_str(status_line, 0, 8, 'Speed: {0:.2f} MHz'.format(ratio))
screen.blit(status_line, [0, 512+1])
w, h = micro_mem_view_dims
screen.blit(mem_map_labels, [512+1, 0])
screen.blit(pygame.transform.scale(micro_mem_view, (w * 3, h * 3)), [512 + 1 + 8 + 8 + 1 + 1, 0])
pygame.display.flip()
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while running:
before, previous_loop_cycles = datetime.datetime.now(), cpu.cycles
time_elapsed = lambda: (datetime.datetime.now()-before).microseconds + 1
for i in range(5000):
cpu.step()
for event in pygame.event.get():
if event.type == pygame.QUIT:
running = False
if event.type == pygame.MOUSEBUTTONDOWN:
x, y = event.pos
if 650 < x < 700 and 720 < y < 790: # Reset button
cpu.__init__(cpu.memory[:]) # Warm reset
orao_kbd_listener(event, cpu)
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if event.type in [pygame.KEYDOWN, pygame.KEYUP]:
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pkeys = pygame.key.get_pressed()
if pkeys[pygame.K_ESCAPE]:
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running = False
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if pkeys[pygame.K_F8]:
print("LOADING: %s" % MEM_LOAD_PRG)
ba = bytearray(open(MEM_LOAD_PRG, "rb").read())
# read load address
addr = ba[1] * 256 + ba[0]
ba = ba[2:]
print('Loadaddr: %04x' % addr)
# load file to memory
for i in range(0, len(ba)):
cpu.memory[addr + i] = ba[i]
# run
cpu.pc = addr
# HACK: reset stack pointer
cpu.sp = 241
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if event.type == pygame.USEREVENT + 1:
render_frame()
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cpu.tape_out = None if cpu.cycles - cpu.last_sound_cycles > 20000 else cpu.tape_out
if len(cpu.sndbuf) > 4096 or cpu.sndbuf and cpu.cycles - cpu.last_sound_cycles > 20000:
while cpu.channel.get_queue():
if time_elapsed() > 10000: break
cpu.channel.queue(pygame.sndarray.make_sound(numpy.uint8(cpu.sndbuf)))
cpu.sndbuf = []
overshoot = cpu.cycles - previous_loop_cycles - time_elapsed()
pygame.time.wait((overshoot > 0) * overshoot // 1000) # Pričekaj da budemo cycle exact
ratio = 1.0 * (cpu.cycles - previous_loop_cycles) / time_elapsed()
pygame.quit()