Solution:

1. IRQ resources The PPC-120/140/150 comes with powerful devices to meet customer demand. Otherwise, based on limitation of IBM PC hardware architecture, the IRQ resources are lacking for all peripheral devices built in PPC-120/140/150. User need to disable some devices never used and releases IRQ resources for the others you want to use. The following table lists the relationship between IRQs and peripheral devices. Hardware interrupt Assignment for PPC-120/140/150 IRQ Device Remark IRQ 0 Timer IRQ 1 Keyboard IRQ 2 Interrupt from 8259 #2 IRQ 3 COM 2 IRQ 4 COM 1 IRQ 5 COM 4 IRQ 6 Floppy Disk Controller IRQ 7 Parallel Port: LPT 1 IRQ 8 COMS Real Time Clock IRQ 9 ESS 1869 Audio Controller IRQ 10 COM 3 IRQ 11 RTL 8139 Network Controller IRQ 12 PS/2 mouse IRQ 13 Math. Coprocessor IRQ 14 Primary IDE Controller IRQ 15 Secondary IDE Controller ? PCMCIA (TI 1250) Controller Hardware shares IRQ. ? IrDA IRQ 3, 4, 5, 10 ? USB By above table, we know two IRQs must be reserved for PCMCIA slots when you want to use them. The following paragraph will help you how to update the PCMCIA driver for Windows 95. 2. Update Driver PPC-120/140 built in a TI1250 CardBus PCMCIA controller. It is too new to support by Windows 95(Windows NT 4.0 supports it). So, user need to update the driver to let Windows 95 recognizes it. In following example installation procedure, the PS/2 mouse and COM3 are disabled and release two IRQs for PCMCIA slots. Please refer to your application to disable what devices. 1. Disable PS/2 mouse and COM3 in BIOS setup menu. When restart PPC-120/140, the BIOS reports IRQ10 and IRQ12 have been assigned to PCAMCIA slots. 2. Under Windows 95, copy CBSS.VxD (Socket Service) and PCCARD.VxD (Card Service) to Windows/ System folder. 3. Copy PCMCIA.INF to Windows/ Inf folder. 4. Go to Control Panel and double click on system icon. 5. In Device manager, remove two ? Cardbus bridge?items under "Oth