CompuServe Messages

MA <<Can I put the old.2.04 ROMS in the A500? Is there any motherboard revision I have to be wary of?>> Yes, you can use the 2.04 ROM from the A2000 in the A500. They both use the same ROM. However, the 2.04 ROM is a 512K ROM, while the older 1.2 & 1.3 were 256K ROMs. Some early A500s (rev 3's & 5's) lacked the ability to auto-detect the larger 512K ROM, and will crash. Connecting a wire between pins #1 and #31 of the 512K ROM fixed this problem. The later A500's (rev 6) didn't need the wire, and needs the wire removed. — MA <<2. This A500 had been upgraded to 1 mg of chip RAM. If I can find an old GVP A500 upgrade card with 8mg of ram, will this[…] Once the A500 is upgraded to 1meg of CHIP RAM, the A501 expander becomes permenant. The Agnus of the A500 now expects to find 512K of CHIP on the motherboard + 512K of RAM *configured* as CHIP on the A501-buss. Remove the A501 RAM, and the Agnus crashs. Some 3rd party A501 cards offer both CHIP & Slow-FAST RAM, by using extra hardware and software. However, many add their A501 Slow-FAST RAM in the Zorro-II address area (stealing locations from the 86-pin Expansion slot). Memory cards added through the 86-pin Expansion slot (on the left side) are not connected to the Agnus or CHIP RAM in any way. You can use these 8-meg FAST RAM cards with the A501 expanders. — MA <<3. I am going to find an external harddisk adapter for the A500. […] Can this Quantum LPS drive fit in the harddisk adapter?>> Depends on what external harddisk adapter your find. Most of the ones designed for the A500 include a 'box' and mounting backet for holding a either a 3.5" SCSI or IDE hard drive. Ron. – ("I'm not stupid, I'm not expendable, and I'm not going!" – quote made by any low level RPG player.)