I`m using ABEL M1 GPS. And I will bwe using a GSM module too. So I will be needing 2 UARTS.

Since the GPS especification (Pins):

1 GND Ground Ground
2 Vcc +5.0 power input Power input
3 TX_232 Serial data output with RS232 level from GPS-Mouse to PC. 4800/9600/19200/38400 and up to 115200 bps, no party,
8-bit data, 1 stop-bit, is used for NEMA and binary message data
outputs.
4 RX_TTL Serial data input with TTL level from PC to GPS-Mouse. Binary message data input
5 TX_TTL Serial data output with TTL level from GPS-Mouse to PC.
4800/9600/19200/38400 and up to 115200 bps, no party,
8-bit data, 1 stop-bit, is used for NEMA and binary message
data outputs.
6 RX_232 Serial data input with RS232 level from PC to GPS-Mouse. Binary message data input

Questions:
1) Is there a way to comunicate the 8052 with the GPS (without using the UART?
2) If not, how should I interface them? How sholud I do to handle 2 UARTS with my At89S8252?


Thanks