************************************************************************** * * * SOME INFORMATIONS ABOUT A1200 rev 1->1D PCB * * CHANNEL Z 10/10/92 * * * * Filip Kopec (comes@comes.com.pl) Greetings from POLAND * ************************************************************************** -------------------------------------------------------------------------- SHORT... REVISION HISTORY (incomplete:)) Rev. 0 engineering prototype 03-13-92 1 advance engineering release 06-29-92 A pilot production release 09-09-92 B revised pereco 920695(???) 11-13-92 -------------------------------------------------------------------------- MAIN COMPONENTS! U0 - MC68881 MATHCOPROCESSOR (OPTION) 68-PIN PLCC U1 - MC68ec020 16MHz PROCESSOR 100-Pin PQFP U2 - 8374 ALICE (AA AGNUS) 84-Pin PLCC U3 - 8364R7 PAULA 52-PIN PLCC U4 - 4203 LISA (AA DENISE) 84-PIN PLCC U5 - 4145F023A GAYLE Gate Array (ASIC) 84-PIN PLCC U6 - 62408 ROM KICKSTART 16bit-512Kx16-150NS U6A&B - 62408 ROM KICKSTART 32bit (OPTION)2x40-PIN DIP U7-9 - 8520R4 VIA.1MHz (CIA) 44-PIN PLCC U9 - RF5C01A RICOH RTC (OPTION) U10-11 - 28F10 FLASH MEMORY 128Kx8 U12 - CXA1145M SONY Video Encoder U13 - 68HC05C(12) Keyboard Mpu 44-PIN PLCC U15 - TLO84ACD or LF347 BICMOS/BIMOS OP-AMP U16-17 - DRAM256Kx16 1st MB CHIP Memory-90NS (Very OLD! models... have only 1MB CHIP) U18-19 - DRAM256Kx16 2nd MB CHIP Memory-90NS (OLD! models... A1201card with 2nd MB CHIP and RTC - connector P9A-B) U20 - 391???(e.425) BUDGIE (ASIC) 128-PIN PQFP U23 - 74F139 U26 - 74LS86 U28 - MC1488D EIA Line Driver U29 - MC1489D EIA Line Receiver U30 - BT101 VIDEO DAC Triple 8Bit-30MHz 44-PIN PLCC U32 - 74HCT244 U34 - 74LS166 U43 - 74LS245 U45-47 - 74LS245 U49 - RH5VA43A Voltage Detector X1 - Oscillator PAL 28.37512MHz NTSC 28.63636MHz X2 - MDG-?????? Modulator PAL MDG-UD3626 NTSC MDG-VA3424 XU9 - 16R4-10/16V8-10 Programmed PAL/GAL ROMFEST 16V8-15/16R4-15 Y451 - Crystal 4.433619MHz Y621 - Resonator Ceramic 3.00MHz -------------------------------------------------------------------------- IN/OUT CONNECTORS! CN1 DB9P Mouse/Joystick 1 CN2 DB9P Joystick 2 CN3 RCA-J Right Audio Output CN4 RCA-J Left Audio Output CN5 DB23S External Floppy CN6 DB25P RS232 CN7 DB25S Parallel CN8 SQ DIN Power Supply Connector CN9 DB23S Video RGB Output CN10 RCA-J Video Composite CN11 DIL-34 Internal Floppy Signal CN12 SIL-4 Internal Floppy Power CN13 MEM-30 Keyboard Membrane CN14 SIL-4 Keyboard Status LED's CN15 PCMCIA II PCMCIA Cards P9A-B EDGE-90 Memory Bus Expansion(very OLD! model) and Real-Time Clock/Calendar -------------------------------------------------------------------------- A1200 MEMORY MAP! 000000 to 1FFFFF 2MB Chip RAM or system ROM overlay 200000 to 5FFFFF 4MB ZORRO II expansion space 600000 to 9FFFFF 4MB Credit Card memory if CC present A00000 to A1FFFF 128KB CC attributes A20000 to A3FFFF 128KB CC I/O A40000 to A5FFFF 128KB CC bits A60000 to A7FFFF 128KB PC I/O A80000 to B7FFFF 1MB System ROM selected B80000 to BEFFFF 448KB Not used BF0000 to BFFFFF 64KB 8520 VIA's C00000 to CFFFFF 1MB C00000 Memory D00000 to D7FFFF 512KB PC Memory D80000 to D8FFFF 64KB Spare Chip select D90000 to D9FFFF 64KB Arcnet Chip select DA0000 to DA3FFF 16KB IDE drive DA4000 to DA4FFF 16KB IDE reserved DA8000 to DAFFFF 32KB CC&IDE config registers DB0000 to DBFFFF 64KB Not used (reserved for external IDE) DC0000 to DCFFFF 64KB Real Time Clock DD0000 to DDFFFF 64KB Reserved for DMA controller DE0000 to DEFFFF 64KB Not used DF0000 to DFFFFF 64KB Chip registers E00000 to E7FFFF 512KB System ROM (first half if 1MB ROM) E80000 to EFFFFF 512KB Configuration and I/O card space F00000 to F7FFFF 512KB Flash ROM space F80000 to FFFFFF 512KB System ROM (second half if 1MB ROM) SEE PICTURES memory.iff AND block.iff -------------------------------------------------------------------------- -------------------------------------------------------------------------- Future... maybe complete sheme! ----------------------------------------------------BYE! Filip------------