reeder@reed.UUCP (Doug Reeder) (10/17/89)
I just found out that VBL must be polled on IIe's (i.e. it is not available as an interruput). This means my VBLClock will not work on IIe's. This also means funny screen splitting (lores/hires, text on top/graphics on bottom, text and graphics superimposed, etc.) must read the floating bus to figure out when to switch, which makes it difficult to do anything else at the same time. -- Doug Reeder USENET: ...!tektronix!reed!reeder Box 722 Reed College BITNET: reeder@reed.BITNET Portland, OR 97202 from ARPA: tektronix!reed!reeder@berkeley.EDU (503) 777-1551 "A blaster can point two ways." -Salvor Hardin